Roo/data/Connection.js

diff --git a/Roo/data/Connection.js b/Roo/data/Connection.js
index 62ba4f2..9a57860 100644 (file)
--- a/Roo/data/Connection.js
+++ b/Roo/data/Connection.js
@@ -364,7 +364,7 @@ Roo.extend(Roo.data.Connection, Roo.util.Observable, {
             this.abort();
         }
 
-        Roo.lib.Ajax.defaultPostHeader = undefined;
+        Roo.lib.Ajax.defaultPostHeader = null;
         this.transId = Roo.lib.Ajax.request( "POST", url, cb, o.formData, o);
         Roo.lib.Ajax.defaultPostHeader = 'application/x-www-form-urlencoded';