diff --git a/src/navigator.js b/src/navigator.js
index 17b18027..bea23ddd 100644
--- a/src/navigator.js
+++ b/src/navigator.js
@@ -272,23 +272,10 @@ $.extend( $.Navigator.prototype, $.EventSource.prototype, $.Viewer.prototype, /*
                     (this.container.clientWidth === 0 ? 1 : this.container.clientWidth),
                     (this.container.clientHeight === 0 ? 1 : this.container.clientHeight)
                 );
+
             if ( !containerSize.equals( this.oldContainerSize ) ) {
-                var oldBounds = this.viewport.getBounds();
-                var oldCenter = this.viewport.getCenter();
                 this.viewport.resize( containerSize, true );
-                var worldBounds = this.world.getHomeBounds();
-                var aspectRatio = worldBounds.width / worldBounds.height;
-                var imageHeight = 1 / aspectRatio;
-                var newWidth = oldBounds.width <= 1 ? oldBounds.width : 1;
-                var newHeight = oldBounds.height <= imageHeight ?
-                    oldBounds.height : imageHeight;
-                var newBounds = new $.Rect(
-                    oldCenter.x - ( newWidth / 2.0 ),
-                    oldCenter.y - ( newHeight / 2.0 ),
-                    newWidth,
-                    newHeight
-                    );
-                this.viewport.fitBounds( newBounds, true );
+                this.viewport.goHome(true);
                 this.oldContainerSize = containerSize;
                 this.drawer.clear();
                 this.world.draw();
diff --git a/src/viewer.js b/src/viewer.js
index 35bcfd80..00108538 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -2745,11 +2745,9 @@ function resizeViewportAndRecenter( viewer, containerSize, oldBounds, oldCenter
 
     // We try to remove blanks as much as possible
     var worldBounds = viewer.world.getHomeBounds();
-    var aspectRatio = worldBounds.width / worldBounds.height;
-    var imageHeight = 1 / aspectRatio;
-    var newWidth = oldBounds.width <= 1 ? oldBounds.width : 1;
-    var newHeight = oldBounds.height <= imageHeight ?
-        oldBounds.height : imageHeight;
+    var newWidth = oldBounds.width <= worldBounds.width ? oldBounds.width : worldBounds.width;
+    var newHeight = oldBounds.height <= worldBounds.height ?
+        oldBounds.height : worldBounds.height;
 
     var newBounds = new $.Rect(
         oldCenter.x - ( newWidth / 2.0 ),
diff --git a/test/demo/collections/index.html b/test/demo/collections/index.html
index b6aca4a1..46b4e7f2 100644
--- a/test/demo/collections/index.html
+++ b/test/demo/collections/index.html
@@ -15,6 +15,10 @@
                 margin: 0;
             }
 
+            .openseadragon1.small {
+                width: 50%;
+            }
+
             .openseadragon-overlay {
                 background-color: rgba(255, 0, 0, 0.3);
             }
diff --git a/test/demo/collections/main.js b/test/demo/collections/main.js
index 21e2d844..51f91c83 100644
--- a/test/demo/collections/main.js
+++ b/test/demo/collections/main.js
@@ -9,7 +9,7 @@
             var testInitialOpen = false;
             var testOverlays = false;
             var testMargins = false;
-            var testNavigator = false;
+            var testNavigator = true;
             var margins;
 
             var config = {
@@ -145,6 +145,12 @@
             });
         },
 
+        // ----------
+        toggle: function() {
+            var $el = $(this.viewer.element);
+            $el.toggleClass('small');
+        },
+
         // ----------
         basicTest: function() {
             var self = this;