diff --git a/samples/menu/menu.cpp b/samples/menu/menu.cpp
index 97c563ab96..4a11c52c36 100644
--- a/samples/menu/menu.cpp
+++ b/samples/menu/menu.cpp
@@ -546,7 +546,7 @@ MyFrame::MyFrame()
                                 wxTE_MULTILINE);
     m_textctrl->SetEditable(false);
 
-    wxLog::SetTimestamp(NULL);
+    wxLog::DisableTimestamp();
     m_logOld = wxLog::SetActiveTarget(new wxLogTextCtrl(m_textctrl));
 
     wxLogMessage(_T("Brief explanations: the commands or the \"Menu\" menu ")
diff --git a/utils/emulator/src/emulator.cpp b/utils/emulator/src/emulator.cpp
index d316d3a146..92a2fb3229 100644
--- a/utils/emulator/src/emulator.cpp
+++ b/utils/emulator/src/emulator.cpp
@@ -105,7 +105,7 @@ wxEmulatorApp::wxEmulatorApp()
 bool wxEmulatorApp::OnInit()
 {
 #if wxUSE_LOG
-    wxLog::SetTimestamp(NULL);
+    wxLog::DisableTimestamp();
 #endif // wxUSE_LOG
     wxInitAllImageHandlers();