diff --git a/usr.bin/ftp/cmds.c b/usr.bin/ftp/cmds.c
index acc3c6bde69..9da2a84b000 100644
--- a/usr.bin/ftp/cmds.c
+++ b/usr.bin/ftp/cmds.c
@@ -1461,7 +1461,7 @@ quote1(initial, argc, argv)
 			len += len1;
 		}
 	}
-	if (command(buf) == PRELIM) {
+	if (command("%s", buf) == PRELIM) {
 		while (getreply(0) == PRELIM)
 			continue;
 	}