diff --git a/t/t7500-commit-template-squash-signoff.sh b/t/t7500-commit-template-squash-signoff.sh
index 9092db5fdc..7d02f79c0d 100755
--- a/t/t7500-commit-template-squash-signoff.sh
+++ b/t/t7500-commit-template-squash-signoff.sh
@@ -413,7 +413,7 @@ test_expect_success 'amend! commit allows empty commit msg body with --allow-emp
 '
 
 test_fixup_reword_opt () {
-	test_expect_success C_LOCALE_OUTPUT "--fixup=reword: incompatible with $1" "
+	test_expect_success "--fixup=reword: incompatible with $1" "
 		echo 'fatal: reword option of --fixup is mutually exclusive with'\
 			'--patch/--interactive/--all/--include/--only' >expect &&
 		test_must_fail git commit --fixup=reword:HEAD~ $1 2>actual &&