diff --git a/src/html/helpfrm.cpp b/src/html/helpfrm.cpp
index 40ce5865f3..4e1c99dcc4 100644
--- a/src/html/helpfrm.cpp
+++ b/src/html/helpfrm.cpp
@@ -1122,6 +1122,8 @@ void wxHtmlHelpFrame::OnActivate(wxActivateEvent& event)
     // wxHTML for context sensitive help systems
     if (event.GetActive() && m_HtmlWin)
         m_HtmlWin->SetFocus();
+
+    event.Skip();
 }
 
 void wxHtmlHelpFrame::OnToolbar(wxCommandEvent& event)