diff --git a/include/wx/msgdlg.h b/include/wx/msgdlg.h
index 10f9ed6a07..ab7660d2b7 100644
--- a/include/wx/msgdlg.h
+++ b/include/wx/msgdlg.h
@@ -92,7 +92,7 @@ public:
         : m_message(message),
           m_caption(caption)
     {
-        m_parent = parent;
+        m_parent = GetParentForModalDialog(parent, style);
         SetMessageDialogStyle(style);
     }
 
diff --git a/src/gtk/msgdlg.cpp b/src/gtk/msgdlg.cpp
index 8bc0dae840..86a7b786cc 100644
--- a/src/gtk/msgdlg.cpp
+++ b/src/gtk/msgdlg.cpp
@@ -48,7 +48,7 @@ wxMessageDialog::wxMessageDialog(wxWindow *parent,
                                  const wxPoint& WXUNUSED(pos))
                : wxMessageDialogBase
                  (
-                    GetParentForModalDialog(parent, style),
+                    parent,
                     message,
                     caption,
                     style