diff --git a/clientgui/DlgDiagnosticLogFlags.cpp b/clientgui/DlgDiagnosticLogFlags.cpp
index 50f6538630..67ca0bc0b5 100755
--- a/clientgui/DlgDiagnosticLogFlags.cpp
+++ b/clientgui/DlgDiagnosticLogFlags.cpp
@@ -258,11 +258,6 @@ void CDlgDiagnosticLogFlags::OnOK(wxCommandEvent& event) {
 
 
 void CDlgDiagnosticLogFlags::OnSetDefaults(wxCommandEvent& ) {
-    CMainDocument* pDoc = wxGetApp().GetDocument();
-
-    wxASSERT(pDoc);
-    wxASSERT(wxDynamicCast(pDoc, CMainDocument));
-
     log_flags.init();
     
     m_checkboxSizer->Clear(true);