diff --git a/services/src/peruser_session.cpp b/services/src/peruser_session.cpp
index 0463b54286690e9f4436c6241ac7a08a68c34c0e..c67651e7e9f31c76ff2ae14e7cf4d7fecc8ea117 100644
--- a/services/src/peruser_session.cpp
+++ b/services/src/peruser_session.cpp
@@ -1136,7 +1136,8 @@ std::shared_ptr<ImeNativeCfg> PerUserSession::GetRealCurrentIme(bool needMinGuar
         }
     }
 #ifdef IMF_SCREENLOCK_MGR_ENABLE
-    if (ScreenLock::ScreenLockManager::GetInstance()->IsScreenLocked()) {
+    auto screenLockMgr = ScreenLock::ScreenLockManager::GetInstance();
+    if (screenLockMgr != nullptr && screenLockMgr->IsScreenLocked()) {
         auto preconfiguredIme = ImeInfoInquirer::GetInstance().GetDefaultImeCfg();
         auto defaultIme = ImeCfgManager::GetInstance().GetCurrentImeCfg(userId_);
         if (preconfiguredIme != nullptr && (defaultIme == nullptr || defaultIme->imeId != preconfiguredIme->imeId)) {