1 files changed, 1 insertions, 1 deletions
diff --git a/src/resources/imagewriter.h b/src/resources/imagewriter.h
index ca8150694..20705d26f 100644
--- a/src/resources/imagewriter.h
+++ b/src/resources/imagewriter.h
@@ -27,6 +27,6 @@ struct SDL_Surface;
 class ImageWriter
 {
     public:
-        static bool writePNG(SDL_Surface *surface,
+        static bool writePNG(SDL_Surface *const surface,
                              const std::string &filename);
 };