1 files changed, 4 insertions, 4 deletions
diff --git a/include/blit.h b/include/blit.h
index b6c80b497..78f67766e 100644
--- a/include/blit.h
+++ b/include/blit.h
@@ -3,15 +3,15 @@
 
 struct Bitmap
 {
-    const u8 *pixels;
+    u8 *pixels;
     u32 width:16;
     u32 height:16;
 };
 
-void BlitBitmapRect4BitWithoutColorKey(struct Bitmap *src, struct Bitmap *dst, u16 srcX, u16 srcY, u16 dstX, u16 dstY, u16 width, u16 height);
-void BlitBitmapRect4Bit(struct Bitmap *src, struct Bitmap *dst, u16 srcX, u16 srcY, u16 dstX, u16 dstY, u16 width, u16 height, u8 colorKey);
+void BlitBitmapRect4BitWithoutColorKey(const struct Bitmap *src, struct Bitmap *dst, u16 srcX, u16 srcY, u16 dstX, u16 dstY, u16 width, u16 height);
+void BlitBitmapRect4Bit(const struct Bitmap *src, struct Bitmap *dst, u16 srcX, u16 srcY, u16 dstX, u16 dstY, u16 width, u16 height, u8 colorKey);
 void FillBitmapRect4Bit(struct Bitmap *surface, u16 x, u16 y, u16 width, u16 height, u8 fillValue);
-void BlitBitmapRect4BitTo8Bit(struct Bitmap *src, struct Bitmap *dst, u16 srcX, u16 srcY, u16 dstX, u16 dstY, u16 width, u16 height, u8 colorKey, u8 paletteOffset);
+void BlitBitmapRect4BitTo8Bit(const struct Bitmap *src, struct Bitmap *dst, u16 srcX, u16 srcY, u16 dstX, u16 dstY, u16 width, u16 height, u8 colorKey, u8 paletteOffset);
 void FillBitmapRect8Bit(struct Bitmap *surface, u16 x, u16 y, u16 width, u16 height, u8 fillValue);
 
 #endif // GUARD_BLIT_H