diff --git a/t/helper/test-oid-array.c b/t/helper/test-oid-array.c
index b16cd0b11b..d1324d086a 100644
--- a/t/helper/test-oid-array.c
+++ b/t/helper/test-oid-array.c
@@ -35,5 +35,9 @@ int cmd__oid_array(int argc, const char **argv)
 		else
 			die("unknown command: %s", line.buf);
 	}
+
+	strbuf_release(&line);
+	oid_array_clear(&array);
+
 	return 0;
 }
diff --git a/t/t0064-oid-array.sh b/t/t0064-oid-array.sh
index 2e5438ccda..88c89e8f48 100755
--- a/t/t0064-oid-array.sh
+++ b/t/t0064-oid-array.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='basic tests for the oid array implementation'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 echoid () {