diff --git a/bower.json b/bower.json
index bf3f41562..fe0f502cf 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.1.478",
+  "version": "1.1.480",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"
diff --git a/build/pdf.combined.js b/build/pdf.combined.js
index 7c5a3f6ed..cda4f1ac4 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 = '1.1.478';
-PDFJS.build = 'a6270bb';
+PDFJS.version = '1.1.480';
+PDFJS.build = '973b15c';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -4809,8 +4809,10 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
       var pattern;
       if (IR[0] === 'TilingPattern') {
         var color = IR[1];
+        var baseTransform = this.baseTransform ||
+                            this.ctx.mozCurrentTransform.slice();
         pattern = new TilingPattern(IR, color, this.ctx, this.objs,
-                                    this.commonObjs, this.baseTransform);
+                                    this.commonObjs, baseTransform);
       } else {
         pattern = getShadingPatternFromIR(IR);
       }
diff --git a/build/pdf.js b/build/pdf.js
index 7def98097..ce5b2ec14 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 = '1.1.478';
-PDFJS.build = 'a6270bb';
+PDFJS.version = '1.1.480';
+PDFJS.build = '973b15c';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -4853,8 +4853,10 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
       var pattern;
       if (IR[0] === 'TilingPattern') {
         var color = IR[1];
+        var baseTransform = this.baseTransform ||
+                            this.ctx.mozCurrentTransform.slice();
         pattern = new TilingPattern(IR, color, this.ctx, this.objs,
-                                    this.commonObjs, this.baseTransform);
+                                    this.commonObjs, baseTransform);
       } else {
         pattern = getShadingPatternFromIR(IR);
       }
diff --git a/build/pdf.worker.js b/build/pdf.worker.js
index 5f9dee45f..325aeea5b 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 = '1.1.478';
-PDFJS.build = 'a6270bb';
+PDFJS.version = '1.1.480';
+PDFJS.build = '973b15c';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
diff --git a/package.json b/package.json
index 459bc453e..8621254dd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.1.478",
+  "version": "1.1.480",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [
     "Mozilla",