diff --git a/src/libraries/libansi/strerror.c b/src/libraries/libansi/strerror.c
index f70e0c4df3da9ffe17a3be711c2dbfab94b81323..dde59d5527debf77d676c3b1de071707045f50d0 100644
--- a/src/libraries/libansi/strerror.c
+++ b/src/libraries/libansi/strerror.c
@@ -2,12 +2,14 @@
 ** strerror.c
 */
 
-static char *rcsid = "$Id: strerror.c,v 0.3 1991/08/30 10:16:37 ceder Exp $";
+static char *rcsid = "$Id: strerror.c,v 0.4 1991/09/04 15:38:16 ceder Exp $";
 
 #include <m-config.h>
 
 #ifndef HAVE_STRERROR
 
+#include <stdio.h>
+
 extern int sys_nerr;
 extern char *sys_errlist[];