diff --git a/t/lib-credential.sh b/t/lib-credential.sh
index 937b831ea6..bb88cc0108 100755
--- a/t/lib-credential.sh
+++ b/t/lib-credential.sh
@@ -19,7 +19,7 @@ check() {
 		false
 	fi &&
 	test_cmp expect-stdout stdout &&
-	test_cmp expect-stderr stderr
+	test_i18ncmp expect-stderr stderr
 }
 
 read_chunk() {