diff --git a/src/common/dlgcmn.cpp b/src/common/dlgcmn.cpp
index b0aa664380..631d459b39 100644
--- a/src/common/dlgcmn.cpp
+++ b/src/common/dlgcmn.cpp
@@ -472,7 +472,7 @@ wxDEFINE_EVENT( wxEVT_WINDOW_MODAL_DIALOG_CLOSED , wxWindowModalDialogEvent  );
 
 IMPLEMENT_DYNAMIC_CLASS(wxWindowModalDialogEvent, wxCommandEvent)
 
-bool wxDialogBase::ShowWindowModal ()
+void wxDialogBase::ShowWindowModal ()
 {
     ShowModal();
     SendWindowModalDialogEvent ( wxEVT_WINDOW_MODAL_DIALOG_CLOSED  );