diff --git a/reactos/subsystems/win32/win32k/ntuser/monitor.c b/reactos/subsystems/win32/win32k/ntuser/monitor.c
index d39091bfb7a..3102d8cde5a 100644
--- a/reactos/subsystems/win32/win32k/ntuser/monitor.c
+++ b/reactos/subsystems/win32/win32k/ntuser/monitor.c
@@ -201,7 +201,6 @@ IntAttachMonitor(IN GDIDEVICE *pGdiDevice,
       }
       Monitor->Prev = p;
    }
-   UserDereferenceObject(Monitor);
 
    return STATUS_SUCCESS;
 }