diff --git a/backends/fb.c b/backends/fb.c
index 2c95369..e6f3924 100644
--- a/backends/fb.c
+++ b/backends/fb.c
@@ -476,7 +476,7 @@ static void plot_char(struct flanterm_context *_ctx, struct flanterm_fb_char *c,
     }
 }
 
-static void plot_char_fast(struct flanterm_context *_ctx, struct flanterm_fb_char *old, struct flanterm_fb_char *c, size_t x, size_t y) {
+static void plot_char_masked(struct flanterm_context *_ctx, struct flanterm_fb_char *old, struct flanterm_fb_char *c, size_t x, size_t y) {
     struct flanterm_fb_context *ctx = (void *)_ctx;
 
     if (x >= _ctx->cols || y >= _ctx->rows) {
@@ -765,11 +765,16 @@ static void flanterm_fb_double_buffer_flush(struct flanterm_context *_ctx) {
             continue;
         }
         struct flanterm_fb_char *old = &ctx->grid[offset];
-        if (q->c.bg == old->bg && q->c.fg == old->fg) {
-            plot_char_fast(_ctx, old, &q->c, q->x, q->y);
-        } else {
+        #ifdef FLANTERM_FB_ENABLE_MASKING
+            if (q->c.bg == old->bg && q->c.fg == old->fg) {
+                plot_char_masked(_ctx, old, &q->c, q->x, q->y);
+            } else {
+                plot_char(_ctx, &q->c, q->x, q->y);
+            }
+        #else
             plot_char(_ctx, &q->c, q->x, q->y);
-        }
+        #endif
+        
         ctx->grid[offset] = q->c;
         ctx->map[offset] = NULL;
     }