diff --git a/bower.json b/bower.json
index 948d45eef..f5d5b9f07 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.0.1154",
+  "version": "1.0.1156",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"
diff --git a/build/pdf.combined.js b/build/pdf.combined.js
index fc4cd4994..de8b4956f 100644
--- a/build/pdf.combined.js
+++ b/build/pdf.combined.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.0.1154';
-PDFJS.build = '23916b2';
+PDFJS.version = '1.0.1156';
+PDFJS.build = 'fac79ab';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
diff --git a/build/pdf.js b/build/pdf.js
index 38eb21114..7e7aa2af1 100644
--- a/build/pdf.js
+++ b/build/pdf.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.0.1154';
-PDFJS.build = '23916b2';
+PDFJS.version = '1.0.1156';
+PDFJS.build = 'fac79ab';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
diff --git a/build/pdf.worker.js b/build/pdf.worker.js
index e500c539c..126b0572c 100644
--- a/build/pdf.worker.js
+++ b/build/pdf.worker.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.0.1154';
-PDFJS.build = '23916b2';
+PDFJS.version = '1.0.1156';
+PDFJS.build = 'fac79ab';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
diff --git a/package.json b/package.json
index 25ee297c7..640f13e0a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.0.1154",
+  "version": "1.0.1156",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [
     "Mozilla",
diff --git a/web/pdf_viewer.js b/web/pdf_viewer.js
index 2fe5d92ff..716bc62e5 100644
--- a/web/pdf_viewer.js
+++ b/web/pdf_viewer.js
@@ -1912,12 +1912,27 @@ var PDFViewer = (function pdfViewer() {
       }
     },
 
+    _setScaleDispatchEvent: function pdfViewer_setScaleDispatchEvent(
+        newScale, newValue, preset) {
+      var event = document.createEvent('UIEvents');
+      event.initUIEvent('scalechange', true, true, window, 0);
+      event.scale = newScale;
+      if (preset) {
+        event.presetValue = newValue;
+      }
+      this.container.dispatchEvent(event);
+    },
+
     _setScaleUpdatePages: function pdfViewer_setScaleUpdatePages(
         newScale, newValue, noScroll, preset) {
       this._currentScaleValue = newValue;
       if (newScale === this._currentScale) {
+        if (preset) {
+          this._setScaleDispatchEvent(newScale, newValue, true);
+        }
         return;
       }
+
       for (var i = 0, ii = this.pages.length; i < ii; i++) {
         this.pages[i].update(newScale);
       }
@@ -1937,13 +1952,7 @@ var PDFViewer = (function pdfViewer() {
         this.scrollPageIntoView(page, dest);
       }
 
-      var event = document.createEvent('UIEvents');
-      event.initUIEvent('scalechange', true, true, window, 0);
-      event.scale = newScale;
-      if (preset) {
-        event.presetValue = newValue;
-      }
-      this.container.dispatchEvent(event);
+      this._setScaleDispatchEvent(newScale, newValue, preset);
     },
 
     _setScale: function pdfViewer_setScale(value, noScroll) {