diff --git a/lib/editor/tinymce/module.js b/lib/editor/tinymce/module.js
index e5eb76cac52..e4c41e905cd 100644
--- a/lib/editor/tinymce/module.js
+++ b/lib/editor/tinymce/module.js
@@ -76,6 +76,8 @@ M.editor_tinymce.init_editor = function(Y, editorid, options) {
         });
     };
 
+    tinyMCE.baseURL = M.cfg.wwwroot + '/lib/editor/tinymce/tiny_mce/3.5.11';
+    tinyMCE.baseURI = new tinymce.util.URI(tinyMCE.baseURL);
     tinyMCE.init(options);
 
     var item = document.getElementById(editorid+'_filemanager');