diff --git a/auth_server.lua b/auth_server.lua
index fd0f6b0..5cc3990 100644
--- a/auth_server.lua
+++ b/auth_server.lua
@@ -104,7 +104,7 @@ while true do
     end
 
     if request.action == "token" then
-        if request.token == nil then
+        if request.token == nil or request.token == "" then
             rednet.send(client_id, "invalid request", "auth")
         else