diff --git a/lib/libedit/src/vis.h b/lib/libedit/src/vis.h
index a1b23c920..ddd597b4b 100644
--- a/lib/libedit/src/vis.h
+++ b/lib/libedit/src/vis.h
@@ -81,7 +81,9 @@
  */
 #define	UNVIS_END	_VIS_END	/* no more characters */
 
+#ifdef HAVE_SYS_CDEFS_H
 #include <sys/cdefs.h>
+#endif
 
 __BEGIN_DECLS
 char	*vis(char *, int, int, int);