diff --git a/Gruntfile.js b/Gruntfile.js
index 5243921a..b077b431 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -57,9 +57,9 @@ module.exports = function(grunt) {
         pkg: packageJson,
         osdVersion: {
             versionStr: packageJson.version,
-            major:      parseInt(packageJson.version.split('.')[0]),
-            minor:      parseInt(packageJson.version.split('.')[1]),
-            revision:   parseInt(packageJson.version.split('.')[2])
+            major:      parseInt(packageJson.version.split('.')[0], 10),
+            minor:      parseInt(packageJson.version.split('.')[1], 10),
+            revision:   parseInt(packageJson.version.split('.')[2], 10)
         },
         clean: {
             build: ["build"],
diff --git a/src/openseadragon.js b/src/openseadragon.js
index 368646ee..1eadf026 100644
--- a/src/openseadragon.js
+++ b/src/openseadragon.js
@@ -288,9 +288,9 @@ window.OpenSeadragon = window.OpenSeadragon || function( options ){
      */
     $.version = {
         versionStr: '<%= osdVersion.versionStr %>',
-        major: parseInt('<%= osdVersion.major %>'),
-        minor: parseInt('<%= osdVersion.minor %>'),
-        revision: parseInt('<%= osdVersion.revision %>')
+        major: parseInt( '<%= osdVersion.major %>', 10 ),
+        minor: parseInt( '<%= osdVersion.minor %>', 10 ),
+        revision: parseInt( '<%= osdVersion.revision %>', 10 )
     };