diff --git a/apps/plugins/lua/rockaux.c b/apps/plugins/lua/rockaux.c
index 2213420ce2..11433f286f 100644
--- a/apps/plugins/lua/rockaux.c
+++ b/apps/plugins/lua/rockaux.c
@@ -22,7 +22,7 @@
 
 #include "plugin.h"
 
-#ifndef SIMULATOR
+#if !defined(SIMULATOR) || defined(__MINGW32__) || defined(__CYGWIN__)
 int errno = 0;
 #endif