diff --git a/zerologon_tester.py b/zerologon_tester.py
index f56f8c2..8ae5b7c 100644
--- a/zerologon_tester.py
+++ b/zerologon_tester.py
@@ -61,12 +61,12 @@ def perform_attack(dc_handle, dc_ip, target_computer):
   for attempt in range(0, MAX_ATTEMPTS):  
     rpc_con = try_zero_authenticate(dc_handle, dc_ip, target_computer)
     
-    if rpc_con:
+    if not rpc_con:
       print('=', end='', flush=True)
     else:
       break
 
-  if not rpc_con:
+  if rpc_con:
     print('\nSuccess! DC can be fully compromised by a Zerologon attack.')
   else:
     print('\nAttack failed. Target is probably patched.')