diff --git a/clientgui/AdvancedFrame.cpp b/clientgui/AdvancedFrame.cpp
index 77354f1a75..5fd385675d 100644
--- a/clientgui/AdvancedFrame.cpp
+++ b/clientgui/AdvancedFrame.cpp
@@ -1092,6 +1092,7 @@ void CAdvancedFrame::OnMenuOpening( wxMenuEvent &event) {
 
     bool isConnected = pDoc->IsConnected();
     wxMenu* menu = event.GetMenu();
+    if (!menu) return;
 
     menu->FindItem(ID_SELECTCOMPUTER, &menuFile);
     menu->FindItem(ID_HELPBOINC, &menuHelp);
diff --git a/clientgui/sg_BoincSimpleFrame.cpp b/clientgui/sg_BoincSimpleFrame.cpp
index 7b16655168..7653afc2d0 100644
--- a/clientgui/sg_BoincSimpleFrame.cpp
+++ b/clientgui/sg_BoincSimpleFrame.cpp
@@ -472,6 +472,7 @@ void CSimpleFrame::OnMenuOpening( wxMenuEvent &event) {
     
     bool isConnected = pDoc->IsConnected();
     wxMenu* menu = event.GetMenu();
+    if (!menu) return;
     
     menu->FindItem(ID_CLOSEWINDOW, &menuFile);
     menu->FindItem(ID_HELPBOINC, &menuHelp);