diff --git a/main.js b/main.js
index 20d35dc..8c39437 100644
--- a/main.js
+++ b/main.js
@@ -262,6 +262,17 @@ define(function (require, exports, module) {
         }
     }
     
+    var isSVG;
+    if (FileUtils.getFileExtension) {  // Sprint 32+
+        isSVG = function (fullPath) {
+            return FileUtils.getFileExtension(fullPath).toLowerCase() === "svg";
+        };
+    } else {                           // Sprint 31 & earlier
+        isSVG = function (fullPath) {
+            return FileUtils.getFilenameExtension(fullPath).toLowerCase() === ".svg";
+        };
+    }
+    
     /**
      */
     function handleCurrentEditorChange() {
@@ -269,8 +280,7 @@ define(function (require, exports, module) {
         
         var newEditor = EditorManager.getCurrentFullEditor();
         if (newEditor) {
-            var ext = FileUtils.getFilenameExtension(newEditor.document.file.fullPath);
-            if (ext.toLowerCase() === ".svg") {
+            if (isSVG(newEditor.document.file.fullPath)) {
                 showSVGPanel(newEditor);
             } else {
                 hideSVGPanel();
diff --git a/package.json b/package.json
index c53f2c3..d757867 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
     "title": "SVG Preview",
     "homepage": "https://github.com/peterflynn/svg-preview",
     "author": "Peter Flynn",
-    "version": "1.1.1",
+    "version": "1.1.2",
     "engines": { "brackets": ">=0.14" },
     "description": "Live preview SVG files in an inline panel while you edit them."
 }
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