diff --git a/app/widget/viewer/viewerdisplay.cpp b/app/widget/viewer/viewerdisplay.cpp
index ba4046bba..0c51bcfec 100644
--- a/app/widget/viewer/viewerdisplay.cpp
+++ b/app/widget/viewer/viewerdisplay.cpp
@@ -147,7 +147,9 @@ void ViewerDisplayWidget::mousePressEvent(QMouseEvent *event)
 
   QOpenGLWidget::mousePressEvent(event);
 
-  emit DragStarted();
+  if (event->button() == Qt::LeftButton) {
+    emit DragStarted();
+  }
 }
 
 void ViewerDisplayWidget::mouseMoveEvent(QMouseEvent *event)