--- a/calendar/base/modules/utils/calProviderUtils.jsm
+++ b/calendar/base/modules/utils/calProviderUtils.jsm
@@ -32,17 +32,17 @@ var calprovider = {
      *                                                            string will be converted to an
      *                                                            input stream.
      * @param {String} aContentType                             Value for Content-Type header, if any
      * @param {nsIInterfaceRequestor} aNotificationCallbacks    Calendar using channel
      * @param {?nsIChannel} aExisting                           An existing channel to modify (optional)
      * @return {nsIChannel}                                     The prepared channel
      */
     prepHttpChannel: function(aUri, aUploadData, aContentType, aNotificationCallbacks, aExisting=null) {
-        // We cannot use a system principal here, since the conncetion setup would fail if
+        // We cannot use a system principal here since the connection setup will fail if
         // same-site cookie protection is enabled in TB and server-side.
         let principal = aExisting ? null
                                   : Services.scriptSecurityManager.createCodebasePrincipal(aUri, {});
         let channel = aExisting || Services.io.newChannelFromURI2(aUri,
                                                                   null,
                                                                   principal,
                                                                   null,
                                                                   Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,