diff --git a/include/SDL_surface.h b/include/SDL_surface.h
index 63c4fac49..fed201a80 100644
--- a/include/SDL_surface.h
+++ b/include/SDL_surface.h
@@ -585,7 +585,7 @@ extern DECLSPEC int SDLCALL SDL_BlendFillRects
  *  rectangle validation and clipping before passing it to SDL_LowerBlit()
  */
 extern DECLSPEC int SDLCALL SDL_UpperBlit
-    (SDL_Surface * src, SDL_Rect * srcrect,
+    (SDL_Surface * src, const SDL_Rect * srcrect,
      SDL_Surface * dst, SDL_Rect * dstrect);
 
 /**
diff --git a/src/video/SDL_surface.c b/src/video/SDL_surface.c
index 810360ee2..6dc64d207 100644
--- a/src/video/SDL_surface.c
+++ b/src/video/SDL_surface.c
@@ -640,7 +640,7 @@ SDL_LowerBlit(SDL_Surface * src, SDL_Rect * srcrect,
 
 
 int
-SDL_UpperBlit(SDL_Surface * src, SDL_Rect * srcrect,
+SDL_UpperBlit(SDL_Surface * src, const SDL_Rect * srcrect,
               SDL_Surface * dst, SDL_Rect * dstrect)
 {
     SDL_Rect fulldst;