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-rw-r--r--src/resources/sdlgfxblitfunc.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/resources/sdlgfxblitfunc.h b/src/resources/sdlgfxblitfunc.h
index b01627dc8..298d04b70 100644
--- a/src/resources/sdlgfxblitfunc.h
+++ b/src/resources/sdlgfxblitfunc.h
@@ -34,7 +34,7 @@ struct SDL_Rect;
// src surface can be any format (most time 32 bit surface with any masks)
// dst surface always correct 32 sufraces (shared format for all)
-int SDLgfxBlitRGBA(SDL_Surface *const src,
+int SDLgfxBlitRGBA(const SDL_Surface *const src,
const SDL_Rect *const srcrect,
SDL_Surface *const dst,
const SDL_Rect *const dstrect);