diff --git a/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp b/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp
index a81afd0..f63037a 100644
--- a/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp
+++ b/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp
@@ -426,6 +426,9 @@ void DefaultToolBar::initMPRButton(){
     auto actionCoronal = m->addAction(tr("Coronal"));
     auto actionSagittal =m->addAction(tr("Sagittal"));
     auto actionAxial = m->addAction(tr("Axial"));
+    mMPRActions[0] = actionCoronal;
+    mMPRActions[1] = actionSagittal;
+    mMPRActions[2] = actionAxial;
     actionCoronal->setCheckable(true);
     actionSagittal->setCheckable(true);
     actionAxial->setCheckable(true);
@@ -435,7 +438,7 @@ void DefaultToolBar::initMPRButton(){
     });
     connect(group, &QActionGroup::triggered, this, [=](QAction* action) {
         for (int i = 0; i < 3; ++i) {
-            if (m->actions()[i]==action) {
+            if (mMPRActions[i]==action) {
                 emit changeReconPlane(i);
                 return;
             }
@@ -469,13 +472,13 @@ void DefaultToolBar::updateNeedCheckFunctionButtons(ViewFunctionState state)
     if (state.canMPR!=-1){
         for (int i = 0; i < 3; ++i) {
             if (i==state.canMPR){
-                mBtnMPR->menu()->actions()[i]->setEnabled(false);
+                mMPRActions[i]->setEnabled(false);
             }
             else{
-                mBtnMPR->menu()->actions()[i]->setEnabled(true);
+                mMPRActions[i]->setEnabled(true);
             }
         }
-        mBtnMPR->menu()->actions()[state.canMPR]->setChecked(true);
+        mMPRActions[state.canMPR]->setChecked(true);
     }
     mBtnFusion->setEnabled(state.canFusion);
 //    SyncHelper::setSyncState((SyncState)state.canSync);
diff --git a/src/src/UI/Widget/ToolBar/DefaultToolBar.h b/src/src/UI/Widget/ToolBar/DefaultToolBar.h
index 9159e2a..7263359 100644
--- a/src/src/UI/Widget/ToolBar/DefaultToolBar.h
+++ b/src/src/UI/Widget/ToolBar/DefaultToolBar.h
@@ -102,6 +102,7 @@ private:
     QAction *mActionHideMeasure;
     QAction *mActionHidePatData;
     QAction* mSyncActions[3]={nullptr,nullptr,nullptr};
+    QAction* mMPRActions[3]={nullptr,nullptr,nullptr};
     ImageViewManager* mImageViewManager;
 };