diff --git a/pywiglenet.py b/pywiglenet.py
index eb8ef6f..41d57eb 100644
--- a/pywiglenet.py
+++ b/pywiglenet.py
@@ -70,7 +70,7 @@ def get_auth_cookie(self):
                 allow_redirects=False
             )
             if response.status_code == 302:
-                self.auth_cookie = response.headers['set-cookie'].split(";")[0]
+                self.auth_cookie = response.headers['set-cookie'].split(";")[3].strip()
                 return self.auth_cookie
         except Exception, e:
             print e
@@ -96,4 +96,4 @@ def query_mac(self, mac):
             if response_parsed.get("success", False):
                 return response_parsed.get("result") if response_parsed.get("result") else False
 
-        return False
\ No newline at end of file
+        return False