diff --git a/t/perf/p5326-multi-pack-bitmaps.sh b/t/perf/p5326-multi-pack-bitmaps.sh
index 51b5636259..a9c5499537 100755
--- a/t/perf/p5326-multi-pack-bitmaps.sh
+++ b/t/perf/p5326-multi-pack-bitmaps.sh
@@ -6,10 +6,6 @@ test_description='Tests performance using midx bitmaps'
 
 test_perf_large_repo
 
-test_expect_success 'enable multi-pack index' '
-	git config core.multiPackIndex true
-'
-
 # we need to create the tag up front such that it is covered by the repack and
 # thus by generated bitmaps.
 test_expect_success 'create tags' '