2 files changed, 2 insertions, 2 deletions
diff --git a/backends/graphics/openglsdl/openglsdl-graphics.cpp b/backends/graphics/openglsdl/openglsdl-graphics.cpp
index 6207561c07..b12c3af5cd 100644
--- a/backends/graphics/openglsdl/openglsdl-graphics.cpp
+++ b/backends/graphics/openglsdl/openglsdl-graphics.cpp
@@ -57,7 +57,7 @@ const Graphics::PixelFormat RGBList[] = {
 	Graphics::PixelFormat(2, 4, 4, 4, 4, 12, 8, 4, 0),  // RGBA4444
 };
 
-Common::List<Graphics::PixelFormat> OpenGLSdlGraphicsManager::getSupportedFormats() {
+Common::List<Graphics::PixelFormat> OpenGLSdlGraphicsManager::getSupportedFormats() const {
 	static Common::List<Graphics::PixelFormat> list;
 	static bool inited = false;
 
diff --git a/backends/graphics/openglsdl/openglsdl-graphics.h b/backends/graphics/openglsdl/openglsdl-graphics.h
index 0f69793c1b..56aae27ab7 100644
--- a/backends/graphics/openglsdl/openglsdl-graphics.h
+++ b/backends/graphics/openglsdl/openglsdl-graphics.h
@@ -45,7 +45,7 @@ public:
 	virtual void init();
 
 #ifdef USE_RGB_COLOR
-	virtual Common::List<Graphics::PixelFormat> getSupportedFormats();
+	virtual Common::List<Graphics::PixelFormat> getSupportedFormats() const;
 #endif
 
 	virtual void warpMouse(int x, int y);