diff --git a/nuklear.h b/nuklear.h
index 784880b..878960d 100644
--- a/nuklear.h
+++ b/nuklear.h
@@ -613,7 +613,7 @@ NK_API nk_bool nk_init_fixed(struct nk_context*, void *memory, nk_size size, con
 /// interface to nuklear. Can be useful for cases like monitoring memory consumption.
 ///
 /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c
-/// nk_bool nk_init(struct nk_context *ctx, struct nk_allocator *alloc, const struct nk_user_font *font);
+/// nk_bool nk_init(struct nk_context *ctx, const struct nk_allocator *alloc, const struct nk_user_font *font);
 /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ///
 /// Parameter   | Description
@@ -624,7 +624,7 @@ NK_API nk_bool nk_init_fixed(struct nk_context*, void *memory, nk_size size, con
 ///
 /// Returns either `false(0)` on failure or `true(1)` on success.
 */
-NK_API nk_bool nk_init(struct nk_context*, struct nk_allocator*, const struct nk_user_font*);
+NK_API nk_bool nk_init(struct nk_context*, const struct nk_allocator*, const struct nk_user_font*);
 /*/// #### nk_init_custom
 /// Initializes a `nk_context` struct from two different either fixed or growing
 /// buffers. The first buffer is for allocating draw commands while the second buffer is
@@ -4132,8 +4132,8 @@ NK_API const nk_rune *nk_font_korean_glyph_ranges(void);
 #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR
 NK_API void nk_font_atlas_init_default(struct nk_font_atlas*);
 #endif
-NK_API void nk_font_atlas_init(struct nk_font_atlas*, struct nk_allocator*);
-NK_API void nk_font_atlas_init_custom(struct nk_font_atlas*, struct nk_allocator *persistent, struct nk_allocator *transient);
+NK_API void nk_font_atlas_init(struct nk_font_atlas*, const struct nk_allocator*);
+NK_API void nk_font_atlas_init_custom(struct nk_font_atlas*, const struct nk_allocator *persistent, const struct nk_allocator *transient);
 NK_API void nk_font_atlas_begin(struct nk_font_atlas*);
 NK_API struct nk_font_config nk_font_config(float pixel_height);
 NK_API struct nk_font *nk_font_atlas_add(struct nk_font_atlas*, const struct nk_font_config*);
@@ -4410,7 +4410,7 @@ NK_API nk_bool nk_filter_binary(const struct nk_text_edit*, nk_rune unicode);
 #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR
 NK_API void nk_textedit_init_default(struct nk_text_edit*);
 #endif
-NK_API void nk_textedit_init(struct nk_text_edit*, struct nk_allocator*, nk_size size);
+NK_API void nk_textedit_init(struct nk_text_edit*, const struct nk_allocator*, nk_size size);
 NK_API void nk_textedit_init_fixed(struct nk_text_edit*, void *memory, nk_size size);
 NK_API void nk_textedit_free(struct nk_text_edit*);
 NK_API void nk_textedit_text(struct nk_text_edit*, const char*, int total_len);
@@ -5970,7 +5970,7 @@ NK_LIB struct nk_vec2 nk_text_calculate_text_bounds(const struct nk_user_font *f
 NK_LIB int nk_strfmt(char *buf, int buf_size, const char *fmt, va_list args);
 #endif
 #ifdef NK_INCLUDE_STANDARD_IO
-NK_LIB char *nk_file_load(const char* path, nk_size* siz, struct nk_allocator *alloc);
+NK_LIB char *nk_file_load(const char* path, nk_size* siz, const struct nk_allocator *alloc);
 #endif
 
 /* buffer */
@@ -6015,7 +6015,7 @@ NK_LIB struct nk_window *nk_find_window(struct nk_context *ctx, nk_hash hash, co
 NK_LIB void nk_insert_window(struct nk_context *ctx, struct nk_window *win, enum nk_window_insert_location loc);
 
 /* pool */
-NK_LIB void nk_pool_init(struct nk_pool *pool, struct nk_allocator *alloc, unsigned int capacity);
+NK_LIB void nk_pool_init(struct nk_pool *pool, const struct nk_allocator *alloc, unsigned int capacity);
 NK_LIB void nk_pool_free(struct nk_pool *pool);
 NK_LIB void nk_pool_init_fixed(struct nk_pool *pool, void *memory, nk_size size);
 NK_LIB struct nk_page_element *nk_pool_alloc(struct nk_pool *pool);
@@ -7492,7 +7492,7 @@ nk_murmur_hash(const void * key, int len, nk_hash seed)
 }
 #ifdef NK_INCLUDE_STANDARD_IO
 NK_LIB char*
-nk_file_load(const char* path, nk_size* siz, struct nk_allocator *alloc)
+nk_file_load(const char* path, nk_size* siz, const struct nk_allocator *alloc)
 {
     char *buf;
     FILE *fd;
@@ -16681,7 +16681,7 @@ nk_font_baker_memory(nk_size *temp, int *glyph_count,
     *temp += nk_build_align + nk_baker_align;
 }
 NK_INTERN struct nk_font_baker*
-nk_font_baker(void *memory, int glyph_count, int count, struct nk_allocator *alloc)
+nk_font_baker(void *memory, int glyph_count, int count, const struct nk_allocator *alloc)
 {
     struct nk_font_baker *baker;
     if (!memory) return 0;
@@ -16698,7 +16698,7 @@ NK_INTERN int
 nk_font_bake_pack(struct nk_font_baker *baker,
     nk_size *image_memory, int *width, int *height, struct nk_recti *custom,
     const struct nk_font_config *config_list, int count,
-    struct nk_allocator *alloc)
+    const struct nk_allocator *alloc)
 {
     NK_STORAGE const nk_size max_height = 1024 * 32;
     const struct nk_font_config *config_iter, *it;
@@ -17428,7 +17428,7 @@ nk_font_atlas_init_default(struct nk_font_atlas *atlas)
 }
 #endif
 NK_API void
-nk_font_atlas_init(struct nk_font_atlas *atlas, struct nk_allocator *alloc)
+nk_font_atlas_init(struct nk_font_atlas *atlas, const struct nk_allocator *alloc)
 {
     NK_ASSERT(atlas);
     NK_ASSERT(alloc);
@@ -17439,7 +17439,7 @@ nk_font_atlas_init(struct nk_font_atlas *atlas, struct nk_allocator *alloc)
 }
 NK_API void
 nk_font_atlas_init_custom(struct nk_font_atlas *atlas,
-    struct nk_allocator *permanent, struct nk_allocator *temporary)
+    const struct nk_allocator *permanent, const struct nk_allocator *temporary)
 {
     NK_ASSERT(atlas);
     NK_ASSERT(permanent);
@@ -19091,7 +19091,7 @@ nk_init_custom(struct nk_context *ctx, struct nk_buffer *cmds,
     return 1;
 }
 NK_API nk_bool
-nk_init(struct nk_context *ctx, struct nk_allocator *alloc,
+nk_init(struct nk_context *ctx, const struct nk_allocator *alloc,
     const struct nk_user_font *font)
 {
     NK_ASSERT(alloc);
@@ -19380,7 +19380,7 @@ nk__next(struct nk_context *ctx, const struct nk_command *cmd)
  *
  * ===============================================================*/
 NK_LIB void
-nk_pool_init(struct nk_pool *pool, struct nk_allocator *alloc,
+nk_pool_init(struct nk_pool *pool, const struct nk_allocator *alloc,
     unsigned int capacity)
 {
     NK_ASSERT(capacity >= 1);
@@ -27204,7 +27204,7 @@ nk_textedit_init_fixed(struct nk_text_edit *state, void *memory, nk_size size)
     nk_str_init_fixed(&state->string, memory, size);
 }
 NK_API void
-nk_textedit_init(struct nk_text_edit *state, struct nk_allocator *alloc, nk_size size)
+nk_textedit_init(struct nk_text_edit *state, const struct nk_allocator *alloc, nk_size size)
 {
     NK_ASSERT(state);
     NK_ASSERT(alloc);
diff --git a/src/nuklear.h b/src/nuklear.h
index 9fb0be4..034b9d1 100644
--- a/src/nuklear.h
+++ b/src/nuklear.h
@@ -391,7 +391,7 @@ NK_API nk_bool nk_init_fixed(struct nk_context*, void *memory, nk_size size, con
 /// interface to nuklear. Can be useful for cases like monitoring memory consumption.
 ///
 /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c
-/// nk_bool nk_init(struct nk_context *ctx, struct nk_allocator *alloc, const struct nk_user_font *font);
+/// nk_bool nk_init(struct nk_context *ctx, const struct nk_allocator *alloc, const struct nk_user_font *font);
 /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ///
 /// Parameter   | Description
@@ -402,7 +402,7 @@ NK_API nk_bool nk_init_fixed(struct nk_context*, void *memory, nk_size size, con
 ///
 /// Returns either `false(0)` on failure or `true(1)` on success.
 */
-NK_API nk_bool nk_init(struct nk_context*, struct nk_allocator*, const struct nk_user_font*);
+NK_API nk_bool nk_init(struct nk_context*, const struct nk_allocator*, const struct nk_user_font*);
 /*/// #### nk_init_custom
 /// Initializes a `nk_context` struct from two different either fixed or growing
 /// buffers. The first buffer is for allocating draw commands while the second buffer is
@@ -3910,8 +3910,8 @@ NK_API const nk_rune *nk_font_korean_glyph_ranges(void);
 #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR
 NK_API void nk_font_atlas_init_default(struct nk_font_atlas*);
 #endif
-NK_API void nk_font_atlas_init(struct nk_font_atlas*, struct nk_allocator*);
-NK_API void nk_font_atlas_init_custom(struct nk_font_atlas*, struct nk_allocator *persistent, struct nk_allocator *transient);
+NK_API void nk_font_atlas_init(struct nk_font_atlas*, const struct nk_allocator*);
+NK_API void nk_font_atlas_init_custom(struct nk_font_atlas*, const struct nk_allocator *persistent, const struct nk_allocator *transient);
 NK_API void nk_font_atlas_begin(struct nk_font_atlas*);
 NK_API struct nk_font_config nk_font_config(float pixel_height);
 NK_API struct nk_font *nk_font_atlas_add(struct nk_font_atlas*, const struct nk_font_config*);
@@ -4188,7 +4188,7 @@ NK_API nk_bool nk_filter_binary(const struct nk_text_edit*, nk_rune unicode);
 #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR
 NK_API void nk_textedit_init_default(struct nk_text_edit*);
 #endif
-NK_API void nk_textedit_init(struct nk_text_edit*, struct nk_allocator*, nk_size size);
+NK_API void nk_textedit_init(struct nk_text_edit*, const struct nk_allocator*, nk_size size);
 NK_API void nk_textedit_init_fixed(struct nk_text_edit*, void *memory, nk_size size);
 NK_API void nk_textedit_free(struct nk_text_edit*);
 NK_API void nk_textedit_text(struct nk_text_edit*, const char*, int total_len);
diff --git a/src/nuklear_context.c b/src/nuklear_context.c
index 727990a..7714496 100644
--- a/src/nuklear_context.c
+++ b/src/nuklear_context.c
@@ -63,7 +63,7 @@ nk_init_custom(struct nk_context *ctx, struct nk_buffer *cmds,
     return 1;
 }
 NK_API nk_bool
-nk_init(struct nk_context *ctx, struct nk_allocator *alloc,
+nk_init(struct nk_context *ctx, const struct nk_allocator *alloc,
     const struct nk_user_font *font)
 {
     NK_ASSERT(alloc);
diff --git a/src/nuklear_font.c b/src/nuklear_font.c
index 836584f..92e4a4d 100644
--- a/src/nuklear_font.c
+++ b/src/nuklear_font.c
@@ -146,7 +146,7 @@ nk_font_baker_memory(nk_size *temp, int *glyph_count,
     *temp += nk_build_align + nk_baker_align;
 }
 NK_INTERN struct nk_font_baker*
-nk_font_baker(void *memory, int glyph_count, int count, struct nk_allocator *alloc)
+nk_font_baker(void *memory, int glyph_count, int count, const struct nk_allocator *alloc)
 {
     struct nk_font_baker *baker;
     if (!memory) return 0;
@@ -163,7 +163,7 @@ NK_INTERN int
 nk_font_bake_pack(struct nk_font_baker *baker,
     nk_size *image_memory, int *width, int *height, struct nk_recti *custom,
     const struct nk_font_config *config_list, int count,
-    struct nk_allocator *alloc)
+    const struct nk_allocator *alloc)
 {
     NK_STORAGE const nk_size max_height = 1024 * 32;
     const struct nk_font_config *config_iter, *it;
@@ -192,7 +192,7 @@ nk_font_bake_pack(struct nk_font_baker *baker,
         it = config_iter;
         do {
             struct stbtt_fontinfo *font_info = &baker->build[i++].info;
-            font_info->userdata = alloc;
+            font_info->userdata = (void*)alloc;
 
             if (!stbtt_InitFont(font_info, (const unsigned char*)it->ttf_blob, stbtt_GetFontOffsetForIndex((const unsigned char*)it->ttf_blob, 0)))
                 return nk_false;
@@ -200,7 +200,7 @@ nk_font_bake_pack(struct nk_font_baker *baker,
     }
     *height = 0;
     *width = (total_glyph_count > 1000) ? 1024 : 512;
-    stbtt_PackBegin(&baker->spc, 0, (int)*width, (int)max_height, 0, 1, alloc);
+    stbtt_PackBegin(&baker->spc, 0, (int)*width, (int)max_height, 0, 1, (void*)alloc);
     {
         int input_i = 0;
         int range_n = 0;
@@ -893,7 +893,7 @@ nk_font_atlas_init_default(struct nk_font_atlas *atlas)
 }
 #endif
 NK_API void
-nk_font_atlas_init(struct nk_font_atlas *atlas, struct nk_allocator *alloc)
+nk_font_atlas_init(struct nk_font_atlas *atlas, const struct nk_allocator *alloc)
 {
     NK_ASSERT(atlas);
     NK_ASSERT(alloc);
@@ -904,7 +904,7 @@ nk_font_atlas_init(struct nk_font_atlas *atlas, struct nk_allocator *alloc)
 }
 NK_API void
 nk_font_atlas_init_custom(struct nk_font_atlas *atlas,
-    struct nk_allocator *permanent, struct nk_allocator *temporary)
+    const struct nk_allocator *permanent, const struct nk_allocator *temporary)
 {
     NK_ASSERT(atlas);
     NK_ASSERT(permanent);
diff --git a/src/nuklear_internal.h b/src/nuklear_internal.h
index a1c00bc..e0de763 100644
--- a/src/nuklear_internal.h
+++ b/src/nuklear_internal.h
@@ -138,7 +138,7 @@ NK_LIB struct nk_vec2 nk_text_calculate_text_bounds(const struct nk_user_font *f
 NK_LIB int nk_strfmt(char *buf, int buf_size, const char *fmt, va_list args);
 #endif
 #ifdef NK_INCLUDE_STANDARD_IO
-NK_LIB char *nk_file_load(const char* path, nk_size* siz, struct nk_allocator *alloc);
+NK_LIB char *nk_file_load(const char* path, nk_size* siz, const struct nk_allocator *alloc);
 #endif
 
 /* buffer */
@@ -183,7 +183,7 @@ NK_LIB struct nk_window *nk_find_window(struct nk_context *ctx, nk_hash hash, co
 NK_LIB void nk_insert_window(struct nk_context *ctx, struct nk_window *win, enum nk_window_insert_location loc);
 
 /* pool */
-NK_LIB void nk_pool_init(struct nk_pool *pool, struct nk_allocator *alloc, unsigned int capacity);
+NK_LIB void nk_pool_init(struct nk_pool *pool, const struct nk_allocator *alloc, unsigned int capacity);
 NK_LIB void nk_pool_free(struct nk_pool *pool);
 NK_LIB void nk_pool_init_fixed(struct nk_pool *pool, void *memory, nk_size size);
 NK_LIB struct nk_page_element *nk_pool_alloc(struct nk_pool *pool);
diff --git a/src/nuklear_pool.c b/src/nuklear_pool.c
index 57419e8..600877a 100644
--- a/src/nuklear_pool.c
+++ b/src/nuklear_pool.c
@@ -7,7 +7,7 @@
  *
  * ===============================================================*/
 NK_LIB void
-nk_pool_init(struct nk_pool *pool, struct nk_allocator *alloc,
+nk_pool_init(struct nk_pool *pool, const struct nk_allocator *alloc,
     unsigned int capacity)
 {
     NK_ASSERT(capacity >= 1);
diff --git a/src/nuklear_text_editor.c b/src/nuklear_text_editor.c
index e381857..1517d81 100644
--- a/src/nuklear_text_editor.c
+++ b/src/nuklear_text_editor.c
@@ -992,7 +992,7 @@ nk_textedit_init_fixed(struct nk_text_edit *state, void *memory, nk_size size)
     nk_str_init_fixed(&state->string, memory, size);
 }
 NK_API void
-nk_textedit_init(struct nk_text_edit *state, struct nk_allocator *alloc, nk_size size)
+nk_textedit_init(struct nk_text_edit *state, const struct nk_allocator *alloc, nk_size size)
 {
     NK_ASSERT(state);
     NK_ASSERT(alloc);
diff --git a/src/nuklear_util.c b/src/nuklear_util.c
index 1d1a0ad..50e6d61 100644
--- a/src/nuklear_util.c
+++ b/src/nuklear_util.c
@@ -984,7 +984,7 @@ nk_murmur_hash(const void * key, int len, nk_hash seed)
 }
 #ifdef NK_INCLUDE_STANDARD_IO
 NK_LIB char*
-nk_file_load(const char* path, nk_size* siz, struct nk_allocator *alloc)
+nk_file_load(const char* path, nk_size* siz, const struct nk_allocator *alloc)
 {
     char *buf;
     FILE *fd;