Fix typo
diff --git a/xos/vpn/admin.py b/xos/vpn/admin.py
index 4640de2..8ad1559 100644
--- a/xos/vpn/admin.py
+++ b/xos/vpn/admin.py
@@ -67,7 +67,7 @@
 
     def save(self, commit=True):
         self.instance.creator = self.cleaned_data.get("creator")
-        self.instance.servery_key = self.cleaned_data.get("sever_key")
+        self.instance.server_key = self.cleaned_data.get("sever_key")
         return super(VPNTenantForm, self).save(commit=commit)
 
     def generate_VPN_Key():