diff --git a/src/win32/dw-extra.h b/src/win32/dw-extra.h
index 424fb606d..a9daced21 100644
--- a/src/win32/dw-extra.h
+++ b/src/win32/dw-extra.h
@@ -23,6 +23,8 @@
 typedef DWRITE_COLOR_GLYPH_RUN1 DWRITE_COLOR_GLYPH_RUN1_WORKAROUND;
 #endif
 
+#if !defined(__MINGW64_VERSION_MAJOR) || __MINGW64_VERSION_MAJOR < 11
 DEFINE_ENUM_FLAG_OPERATORS(DWRITE_GLYPH_IMAGE_FORMATS);
+#endif
 
 #endif /* DWRITE_EXTRA_H */