diff --git a/src/lib/libc/string/ffs.c b/src/lib/libc/string/ffs.c
index a75fd9d7..09d6e35e 100644
--- a/src/lib/libc/string/ffs.c
+++ b/src/lib/libc/string/ffs.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ffs.c,v 1.9 2015/08/31 02:53:57 guenther Exp $	*/
+/*	$OpenBSD: ffs.c,v 1.10 2018/01/18 08:23:44 guenther Exp $	*/
 
 /*
  * Public domain.
@@ -38,4 +38,3 @@ ffs(int mask)
 
 	return (bit + t[ r & 0xf ]);
 }
-DEF_WEAK(ffs);