--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -27,6 +27,10 @@
 #include <unistd.h>
 #include <locale.h>
 
+#ifndef SIGWINCH
+#define SIGWINCH 28
+#endif
+
 #define LKC_DIRECT_LINK
 #include "lkc.h"
 
