diff --git a/src/viewer.js b/src/viewer.js
index 32a18722..a359a9d9 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -1973,12 +1973,11 @@ function openTileSource( viewer, source ) {
     }
 
     if( _this.preserveOverlays ){
-        _this.source.overlays = _this.currentOverlays;
-    }
-    else{
-        _this.source.overlays = _this.source.overlays || [];
+        _this.overlays = _this.currentOverlays;
     }
 
+    _this.source.overlays = _this.source.overlays || [];
+
     _this.drawer = new $.Drawer({
         viewer:             _this,
         source:             _this.source,