diff --git a/contrib/nvi/common/exf.c b/contrib/nvi/common/exf.c
index 8c4dea552e5..e332f4700e7 100644
--- a/contrib/nvi/common/exf.c
+++ b/contrib/nvi/common/exf.c
@@ -1004,7 +1004,7 @@ success_open:
 			*--s = '.';
 		}
 	}
-	msgq(sp, M_INFO, s);
+	msgq(sp, M_INFO, "%s", s);
 	if (nf)
 		FREE_SPACE(sp, p, 0);
 	return (0);