diff --git a/services/abilitymgr/src/mission_list_manager.cpp b/services/abilitymgr/src/mission_list_manager.cpp
index d8b1bf0be318d0a30b0e3e5a2cfb70238bd94a68..83f5ae0b3b1f21c6bb5c99b6e55f4284e458e9b2 100644
--- a/services/abilitymgr/src/mission_list_manager.cpp
+++ b/services/abilitymgr/src/mission_list_manager.cpp
@@ -215,7 +215,6 @@ int MissionListManager::StartAbility(const std::shared_ptr<AbilityRecord> &curre
 int MissionListManager::MinimizeAbility(const sptr<IRemoteObject> &token, bool fromUser)
 {
     TAG_LOGI(AAFwkTag::ABILITYMGR, "fromUser:%{public}d.", fromUser);
-    std::lock_guard guard(managerLock_);
     // check if ability is in list to avoid user create fake token.
     CHECK_POINTER_AND_RETURN_LOG(GetAbilityRecordByTokenInner(token), INNER_ERR,
         "Minimize ability fail, ability is not in mission list.");