diff --git a/src/video/cocoa/cocoa_ogl.h b/src/video/cocoa/cocoa_ogl.h
--- a/src/video/cocoa/cocoa_ogl.h
+++ b/src/video/cocoa/cocoa_ogl.h
@@ -33,6 +33,8 @@ public:
 
 	void ClearSystemSprites() override;
 
+	void PopulateSystemSprites() override;
+
 	bool HasAnimBuffer() override { return true; }
 	uint8 *GetAnimBuffer() override { return this->anim_buffer; }