diff --git a/lib/ComicBook.js b/lib/ComicBook.js
index a6be874..af99fe8 100755
--- a/lib/ComicBook.js
+++ b/lib/ComicBook.js
@@ -89,6 +89,14 @@ var ComicBook = (function ($) {
       libPath: '/lib/'
     };
 
+    this.isMobile = false;
+
+    if (navigator.userAgent.match(/mobile/i)) {
+      this.isMobile = true;
+      document.body.classList.add('mobile');
+      defaults.displayMode = 'single';
+    }
+
     var options = merge(defaults, opts); // options array for internal use
 
     var no_pages = srcs.length;
@@ -102,10 +110,6 @@ var ComicBook = (function ($) {
     var page_requested = false; // used to request non preloaded pages
     var shiv = false;
 
-    if (navigator.userAgent.match(/mobile/i)) {
-      document.body.classList.add('mobile');
-    }
-
     /**
      * Gets the window.innerWidth - scrollbars
      */