1 files changed, 9 insertions, 5 deletions
diff --git a/mate-panel/panel-action-protocol.c b/mate-panel/panel-action-protocol.c
index 4661971d..f261d860 100644
--- a/mate-panel/panel-action-protocol.c
+++ b/mate-panel/panel-action-protocol.c
@@ -2,6 +2,7 @@
 * panel-action-protocol.h: _MATE_PANEL_ACTION protocol impl.
 *
 * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
@@ -144,15 +145,18 @@ panel_action_protocol_filter (GdkXEvent *gdk_xevent,
 if (window != gdk_screen_get_root_window (screen))
 return GDK_FILTER_CONTINUE;
 
- if (xevent->xclient.data.l [0] == atom_mate_panel_action_main_menu)
+ if (xevent->xclient.data.l [0] < 0)
+ return GDK_FILTER_CONTINUE;
+
+ if (xevent->xclient.data.l [0] == (long) atom_mate_panel_action_main_menu)
 panel_action_protocol_main_menu (screen, xevent->xclient.data.l [1], event);
- else if (xevent->xclient.data.l [0] == atom_mate_panel_action_run_dialog)
+ else if (xevent->xclient.data.l [0] == (long) atom_mate_panel_action_run_dialog)
 panel_action_protocol_run_dialog (screen, xevent->xclient.data.l [1]);
- else if (xevent->xclient.data.l [0] == atom_gnome_panel_action_main_menu)
+ else if (xevent->xclient.data.l [0] == (long) atom_gnome_panel_action_main_menu)
 panel_action_protocol_main_menu (screen, xevent->xclient.data.l [1], event);
- else if (xevent->xclient.data.l [0] == atom_gnome_panel_action_run_dialog)
+ else if (xevent->xclient.data.l [0] == (long) atom_gnome_panel_action_run_dialog)
 panel_action_protocol_run_dialog (screen, xevent->xclient.data.l [1]);
- else if (xevent->xclient.data.l [0] == atom_mate_panel_action_kill_dialog)
+ else if (xevent->xclient.data.l [0] == (long) atom_mate_panel_action_kill_dialog)
 panel_action_protocol_kill_dialog (screen, xevent->xclient.data.l [1]);
 else
 return GDK_FILTER_CONTINUE;