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-rw-r--r--ui/gtk/voip_calls_dlg.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/ui/gtk/voip_calls_dlg.c b/ui/gtk/voip_calls_dlg.c
index c5916b667b..7042f25fa3 100644
--- a/ui/gtk/voip_calls_dlg.c
+++ b/ui/gtk/voip_calls_dlg.c
@@ -358,6 +358,9 @@ on_graph_bt_clicked(GtkButton *button _U_, gpointer user_data _U_)
voip_calls_info_t *listinfo;
voip_calls_tapinfo_t *tapinfo = voip_calls_get_info();
+ if(!tapinfo->graph_analysis){
+ return;
+ }
g_queue_sort(tapinfo->graph_analysis->items, graph_analysis_sort_compare, NULL);
/* reset the "display" parameter in graph analysis */