diff --git a/lib/server/appcache.js b/lib/server/appcache.js
index 14077afb..24a7cec2 100644
--- a/lib/server/appcache.js
+++ b/lib/server/appcache.js
@@ -31,7 +31,7 @@ exports.addFiles = function(pFileNames){
             var lCurrentName = pFileNames[i];
             if(typeof lCurrentName === 'object')
                 for(var lName in lCurrentName){
-                    FallBack_s = lName + ' ' + lCurrentName[lName] + '\n';
+                    FallBack_s += lName + ' ' + lCurrentName[lName] + '\n';
                     exports.watch(lCurrentName[lName]);
                 }