diff --git a/t/t1309-early-config.sh b/t/t1309-early-config.sh
index 0c37e7180d..eeb60e4143 100755
--- a/t/t1309-early-config.sh
+++ b/t/t1309-early-config.sh
@@ -91,7 +91,7 @@ test_expect_failure 'ignore .git/ with invalid config' '
 
 test_expect_success 'early config and onbranch' '
 	echo "[broken" >broken &&
-	test_with_config "[includeif \"onbranch:refs/heads/master\"]path=../broken"
+	test_with_config "[includeif \"onbranch:master\"]path=../broken"
 '
 
 test_done