--- EV/EV.xs	2013/04/06 00:05:45	1.166
+++ EV/EV.xs	2013/10/22 10:43:05	1.167
@@ -3,8 +3,10 @@
 #include "XSUB.h"
 
 /* fix perl api breakage */
-#undef signal
-#undef sigaction
+#ifndef WIN32
+# undef signal
+# undef sigaction
+#endif
 
 #include "schmorp.h"