diff --git a/app/SysTray-X/SysTray-X-app/windowctrl-unix.cpp b/app/SysTray-X/SysTray-X-app/windowctrl-unix.cpp
index 64f91b8..921e1de 100644
--- a/app/SysTray-X/SysTray-X-app/windowctrl-unix.cpp
+++ b/app/SysTray-X/SysTray-X-app/windowctrl-unix.cpp
@@ -486,6 +486,8 @@ void    WindowCtrlUnix::hideWindow( quint64 window, bool hide )
         SendEvent( m_display, window, "_NET_WM_STATE", _NET_WM_STATE_REMOVE, _ATOM_SKIP_TASKBAR );
         SendEvent( m_display, window, "_NET_WM_STATE", _NET_WM_STATE_REMOVE, _ATOM_SKIP_PAGER );
     }
+
+    Flush( m_display );
 }