diff --git a/lib/private-libwebsockets.h b/lib/private-libwebsockets.h
index 32fd2b51..a5a11a7f 100644
--- a/lib/private-libwebsockets.h
+++ b/lib/private-libwebsockets.h
@@ -98,14 +98,14 @@ void debug(const char *format, ...)
 }
 #else
 #ifdef WIN32
-static __inline
+#define debug(...)
 #else
 static inline
-#endif
 void debug(const char *format, ...)
 {
 }
 #endif
+#endif
 
 
 /*