--- src/dispatch_common.c
+++ src/dispatch_common.c
@@ -272,7 +272,11 @@
 #endif
 };
 
+#if defined _MSC_VER && defined __clang__
+static bool library_initialized = true;
+#else
 static bool library_initialized;
+#endif
 
 static bool epoxy_current_context_is_glx(void);