diff --git a/src/platform/sdl/sdl-events.h b/src/platform/sdl/sdl-events.h
index 8c3d73c7b..d8b9c22bb 100644
--- a/src/platform/sdl/sdl-events.h
+++ b/src/platform/sdl/sdl-events.h
@@ -23,6 +23,4 @@ void GBASDLHandleEvent(struct GBAThread* context, struct GBASDLEvents* sdlContex
 
 enum GBAKey GBASDLMapButtonToKey(int button);
 
-enum GBAKey GBASDLMapButtonToKey(int button);
-
 #endif