diff --git a/storage/innobase/sync/sync0sync.cc b/storage/innobase/sync/sync0sync.cc
index d00aabd6ff1..e62e4e7bc30 100644
--- a/storage/innobase/sync/sync0sync.cc
+++ b/storage/innobase/sync/sync0sync.cc
@@ -1454,6 +1454,7 @@ sync_thread_level_arrays_free(void)
 
 		/* If this slot was allocated then free the slot memory too. */
 		if (slot->levels != NULL) {
+			slot->levels->elems.erase(slot->levels->elems.begin(),slot->levels->elems.end());
 			free(slot->levels);
 			slot->levels = NULL;
 		}
diff --git a/storage/xtradb/sync/sync0sync.cc b/storage/xtradb/sync/sync0sync.cc
index 7e104202f36..fcc2e01c1f4 100644
--- a/storage/xtradb/sync/sync0sync.cc
+++ b/storage/xtradb/sync/sync0sync.cc
@@ -1580,6 +1580,7 @@ sync_thread_level_arrays_free(void)
 
 		/* If this slot was allocated then free the slot memory too. */
 		if (slot->levels != NULL) {
+			slot->levels->elems.erase(slot->levels->elems.begin(),slot->levels->elems.end());
 			free(slot->levels);
 			slot->levels = NULL;
 		}