diff --git a/sbin/restore/tape.c b/sbin/restore/tape.c
index 1355aff45e55..a566c5acf339 100644
--- a/sbin/restore/tape.c
+++ b/sbin/restore/tape.c
@@ -227,7 +227,7 @@ setup(void)
 	volno = 1;
 	setdumpnum();
 	FLUSHTAPEBUF();
-	if (!pipein && !bflag)
+	if (!pipein && !pipecmdin && !bflag)
 		findtapeblksize();
 	if (gethead(&spcl) == FAIL) {
 		fprintf(stderr, "Tape is not a dump tape\n");