1 files changed, 1 insertions, 0 deletions
diff --git a/openbox/client.c b/openbox/client.c
index 5b81cd22..8f3953bb 100644
--- a/openbox/client.c
+++ b/openbox/client.c
@@ -1048,6 +1048,7 @@ void client_update_wmhints(Client *self)
                         self->transients = g_slist_remove(self->transients,
                                                           it->data);
                     }
+                self->group = NULL;
             }
             if (hints->window_group != None)
                 self->group = group_add(hints->window_group, self);