diff --git a/test/T070-insert.sh b/test/T070-insert.sh
index c8161e1e..1c7ca846 100755
--- a/test/T070-insert.sh
+++ b/test/T070-insert.sh
@@ -222,24 +222,24 @@ test_expect_equal "$output" "2"
 
 test_begin_subtest "Insert message, create invalid subfolder"
 gen_insert_msg
-test_expect_code 1 "notmuch insert --folder=../G --create-folder $gen_msg_filename"
+test_expect_code 1 "notmuch insert --folder=../G --create-folder < $gen_msg_filename"
 
 OLDCONFIG=$(notmuch config get new.tags)
 
 test_begin_subtest "Empty tags in new.tags are forbidden"
 notmuch config set new.tags "foo;;bar"
 gen_insert_msg
-output=$(notmuch insert $gen_msg_filename 2>&1)
+output=$(notmuch insert < $gen_msg_filename 2>&1)
 test_expect_equal "$output" "Error: tag '' in new.tags: empty tag forbidden"
 
 test_begin_subtest "Tags starting with '-' in new.tags are forbidden"
 notmuch config set new.tags "-foo;bar"
 gen_insert_msg
-output=$(notmuch insert $gen_msg_filename 2>&1)
+output=$(notmuch insert < $gen_msg_filename 2>&1)
 test_expect_equal "$output" "Error: tag '-foo' in new.tags: tag starting with '-' forbidden"
 
 test_begin_subtest "Invalid tags set exit code"
-test_expect_code 1 "notmuch insert $gen_msg_filename 2>&1"
+test_expect_code 1 "notmuch insert < $gen_msg_filename 2>&1"
 
 notmuch config set new.tags $OLDCONFIG