diff --git a/src/src/UI/Window/QDicomViewer.cpp b/src/src/UI/Window/QDicomViewer.cpp
index 9bb9eee..8beb057 100644
--- a/src/src/UI/Window/QDicomViewer.cpp
+++ b/src/src/UI/Window/QDicomViewer.cpp
@@ -172,9 +172,9 @@ void QDicomViewer::createToolButton() {
     this->SetupCloseTool(btnclose);
 
     connect(btnMPR, &QToolButton::clicked, [=](){
-        ui->viewContainer->getViewManager()->switchSliceOrientation();
         SyncHelper::setSyncState(DIS_SYNC);
         syncStateChanged();
+        ui->viewContainer->getViewManager()->switchSliceOrientation();
     });
 }