diff --git a/lib/libedit/src/unvis.c b/lib/libedit/src/unvis.c
index c20a67f4c..8e6fcf5fa 100644
--- a/lib/libedit/src/unvis.c
+++ b/lib/libedit/src/unvis.c
@@ -46,9 +46,11 @@ __RCSID("$NetBSD: unvis.c,v 1.32 2010/11/27 21:22:11 christos Exp $");
 #include <stdio.h>
 #include <vis.h>
 
+#ifdef _LIBC
 #ifdef __weak_alias
 __weak_alias(strunvis,_strunvis)
 #endif
+#endif
 
 #if !HAVE_VIS
 /*