diff --git a/src/gtk/glcanvas.cpp b/src/gtk/glcanvas.cpp
index 7ca6f0a252..bf5f38f943 100644
--- a/src/gtk/glcanvas.cpp
+++ b/src/gtk/glcanvas.cpp
@@ -18,22 +18,6 @@
 #include "wx/gtk/private/wrapgtk.h"
 #include <gdk/gdkx.h>
 
-//-----------------------------------------------------------------------------
-// "size_allocate" of m_wxwindow
-//-----------------------------------------------------------------------------
-
-extern "C" {
-static void
-gtk_glcanvas_size_callback(GtkWidget *WXUNUSED(widget),
-                           GtkAllocation * WXUNUSED(alloc),
-                           wxGLCanvas *win)
-{
-    wxSizeEvent event( wxSize(win->m_width,win->m_height), win->GetId() );
-    event.SetEventObject( win );
-    win->HandleWindowEvent( event );
-}
-}
-
 //-----------------------------------------------------------------------------
 // emission hook for "parent-set"
 //-----------------------------------------------------------------------------
@@ -222,8 +206,6 @@ bool wxGLCanvas::Create(wxWindow *parent,
 
     gtk_widget_set_double_buffered(m_wxwindow, false);
 
-    g_signal_connect(m_widget,   "size_allocate", G_CALLBACK(gtk_glcanvas_size_callback),     this);
-
     return true;
 }
 
diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index 17c6150b83..2ff5c94b07 100644
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -2271,7 +2271,6 @@ size_allocate(GtkWidget* WXUNUSED_IN_GTK2(widget), GtkAllocation* alloc, wxWindo
         // so always get size from m_widget->allocation
         win->m_width  = a.width;
         win->m_height = a.height;
-        if (!win->m_nativeSizeEvent)
         {
             wxSizeEvent event(win->GetSize(), win->GetId());
             event.SetEventObject(win);