diff --git a/sys/sys/signalvar.h b/sys/sys/signalvar.h
index e1dbb279fe7d..779dd8eb44a9 100644
--- a/sys/sys/signalvar.h
+++ b/sys/sys/signalvar.h
@@ -229,7 +229,7 @@ void	sendsig __P((sig_t action, int sig, sigset_t *retmask, u_long code));
  *
  * MP SAFE
  */
-extern __inline int __cursig(struct proc *p)
+static __inline int __cursig(struct proc *p)
 {
 	sigset_t tmpset;
 	int r;