diff --git a/LesionTracker/client/components/viewer/viewer.js b/LesionTracker/client/components/viewer/viewer.js
index ef4024d53..712b4e7e2 100644
--- a/LesionTracker/client/components/viewer/viewer.js
+++ b/LesionTracker/client/components/viewer/viewer.js
@@ -323,6 +323,7 @@ const initHangingProtocol = () => {
 
         Session.set('ViewerReady', true);
 
+        Session.set('activeViewport', 0);
     });
 };
 
diff --git a/OHIFViewer/client/components/viewer/viewer.js b/OHIFViewer/client/components/viewer/viewer.js
index a0a279b03..c72af29a2 100644
--- a/OHIFViewer/client/components/viewer/viewer.js
+++ b/OHIFViewer/client/components/viewer/viewer.js
@@ -38,6 +38,7 @@ const initHangingProtocol = () => {
 
         Session.set('ViewerReady', true);
 
+        Session.set('activeViewport', 0);
     });
 };