diff --git a/include/_tail_cc/signal.h b/include/_tail_cc/signal.h
index 23bb51e7f..38d159c05 100644
--- a/include/_tail_cc/signal.h
+++ b/include/_tail_cc/signal.h
@@ -11,6 +11,7 @@
 #else
 #define _NSIG             16	/* number of signals used */
 #endif
+#define NSIG _NSIG
 
 #define SIGHUP	           1	/* hangup */
 #define SIGINT             2	/* interrupt (DEL) */