diff --git a/test/sharness/t0290-cid.sh b/test/sharness/t0290-cid.sh
index 67a1de2fc..a0b6d84f3 100755
--- a/test/sharness/t0290-cid.sh
+++ b/test/sharness/t0290-cid.sh
@@ -71,6 +71,7 @@ test_expect_success "cid format -v 1 -b base58btc works from stdin" '
 
 cat <<EOF > bases_expect
       0  identity
+0    48  base2
 b    98  base32
 B    66  base32upper
 c    99  base32pad