diff --git a/cluster/kubemark/config-default.sh b/cluster/kubemark/config-default.sh
index 9e259438d9e..313bc34b269 100644
--- a/cluster/kubemark/config-default.sh
+++ b/cluster/kubemark/config-default.sh
@@ -63,7 +63,7 @@ TEST_CLUSTER_API_CONTENT_TYPE="${TEST_CLUSTER_API_CONTENT_TYPE:-}"
 # ContentType used to store objects in underlying database.
 TEST_CLUSTER_STORAGE_CONTENT_TYPE="${TEST_CLUSTER_STORAGE_CONTENT_TYPE:-}"
 
-ENABLE_GARBAGE_COLLECTOR=${ENABLE_GARBAGE_COLLECTOR:-false}
+ENABLE_GARBAGE_COLLECTOR=${ENABLE_GARBAGE_COLLECTOR:-true}
 
 KUBELET_TEST_ARGS="--max-pods=100 $TEST_CLUSTER_LOG_LEVEL ${TEST_CLUSTER_API_CONTENT_TYPE}"
 APISERVER_TEST_ARGS="--runtime-config=extensions/v1beta1 ${API_SERVER_TEST_LOG_LEVEL} ${TEST_CLUSTER_STORAGE_CONTENT_TYPE} ${TEST_CLUSTER_DELETE_COLLECTION_WORKERS} --enable-garbage-collector=${ENABLE_GARBAGE_COLLECTOR}"