diff --git a/t/t4150-am.sh b/t/t4150-am.sh
index 2ae93d3c96..699a81ab5c 100755
--- a/t/t4150-am.sh
+++ b/t/t4150-am.sh
@@ -1086,7 +1086,7 @@ test_expect_success 'am works with multi-line in-body headers' '
 	# bump from, date, and subject down to in-body header
 	awk "
 		/^From:/{
-			print \"From: x <x\@example.com>\";
+			print \"From: x <x@example.com>\";
 			print \"Date: Sat, 1 Jan 2000 00:00:00 +0000\";
 			print \"Subject: x\n\";
 		}; 1
diff --git a/t/t5333-pseudo-merge-bitmaps.sh b/t/t5333-pseudo-merge-bitmaps.sh
index ba5ae6a00c..1f7a5d82ee 100755
--- a/t/t5333-pseudo-merge-bitmaps.sh
+++ b/t/t5333-pseudo-merge-bitmaps.sh
@@ -234,8 +234,8 @@ test_expect_success 'pseudo-merge pattern with capture groups' '
 			test_commit_bulk 16 &&
 
 			git rev-list HEAD~16.. >in &&
-			sed "s|\(.*\)|create refs/remotes/$r/tags/\1 \1" in |
-			git update-ref --stdin || return 1
+			sed "s|\(.*\)|create refs/remotes/$r/tags/\1 \1|" in >refs &&
+			git update-ref --stdin <refs || return 1
 		done &&
 
 		git \