diff --git a/nuklear.h b/nuklear.h
index 150ad77..30acff8 100644
--- a/nuklear.h
+++ b/nuklear.h
@@ -335,7 +335,7 @@ extern "C" {
  #define NK_POINTER_TYPE uintptr_t
 #else
   #ifndef NK_INT8
-    #define NK_INT8 char
+    #define NK_INT8 signed char
   #endif
   #ifndef NK_UINT8
     #define NK_UINT8 unsigned char
diff --git a/src/nuklear.h b/src/nuklear.h
index b1ef888..19d9323 100644
--- a/src/nuklear.h
+++ b/src/nuklear.h
@@ -119,7 +119,7 @@ extern "C" {
  #define NK_POINTER_TYPE uintptr_t
 #else
   #ifndef NK_INT8
-    #define NK_INT8 char
+    #define NK_INT8 signed char
   #endif
   #ifndef NK_UINT8
     #define NK_UINT8 unsigned char