Index: test/T400-hooks.sh
--- test/T400-hooks.sh.orig
+++ test/T400-hooks.sh
@@ -208,7 +208,7 @@ EOF
     generate_message '[subject]="add msg in new"'
     NOTMUCH_NEW
     notmuch search id:$id1 or id:$gen_msg_id | notmuch_search_sanitize > OUTPUT
-    cat <<EOF | sed s'/^[ \t]*//' > EXPECTED
+    cat <<EOF | sed s'/^[ 	]*//' > EXPECTED
     thread:XXX   2001-01-05 [1/1] Notmuch Test Suite; add msg in pre-new (inbox unread)
     thread:XXX   2001-01-05 [1/1] Notmuch Test Suite; add msg in new (inbox unread)
 EOF
