diff --git a/reactos/base/system/winlogon/winlogon.c b/reactos/base/system/winlogon/winlogon.c
index 77ee72bab86..7a10e904c12 100644
--- a/reactos/base/system/winlogon/winlogon.c
+++ b/reactos/base/system/winlogon/winlogon.c
@@ -86,7 +86,7 @@ PlayLogonSoundThread(
 
 			Sleep(1000);
 
-		}while(Index < 20);
+		}while(Index++ < 20);
 
 		CloseServiceHandle(hService);
 		CloseServiceHandle(hSCManager);