diff --git a/video/out/opengl/context_dxinterop.c b/video/out/opengl/context_dxinterop.c
index 3ebdfbeaa08ae..bcf67174fb831 100644
--- a/video/out/opengl/context_dxinterop.c
+++ b/video/out/opengl/context_dxinterop.c
@@ -30,11 +30,6 @@
 EXTERN_C IMAGE_DOS_HEADER __ImageBase;
 #define HINST_THISCOMPONENT ((HINSTANCE)&__ImageBase)
 
-// mingw-w64 header typo?
-#ifndef IDirect3DSwapChain9Ex_GetBackBuffer
-#define IDirect3DSwapChain9Ex_GetBackBuffer IDirect3DSwapChain9EX_GetBackBuffer
-#endif
-
 struct priv {
     GL gl;