diff --git a/include/wx/generic/imaglist.h b/include/wx/generic/imaglist.h
index d13864cbbf..60f0c5d8e3 100644
--- a/include/wx/generic/imaglist.h
+++ b/include/wx/generic/imaglist.h
@@ -59,7 +59,7 @@ class wxImageList: public wxObject
     bool Create();
     int GetImageCount() const;
     int Add( const wxBitmap &bitmap );
-    wxBitmap *GetBitmap(int index);
+    const wxBitmap *GetBitmap(int index) const;
     bool Replace( int index, const wxBitmap &bitmap );
     bool Remove( int index );
     bool RemoveAll();
diff --git a/src/generic/imaglist.cpp b/src/generic/imaglist.cpp
index 543d019cdf..20a5101650 100644
--- a/src/generic/imaglist.cpp
+++ b/src/generic/imaglist.cpp
@@ -48,7 +48,7 @@ int wxImageList::Add( const wxBitmap &bitmap )
   return m_images.Number();
 }
 
-wxBitmap *wxImageList::GetBitmap(int index) {
+const wxBitmap *wxImageList::GetBitmap(int index) const {
   wxNode *node = m_images.Nth(index);
   if (node != NULL)
     return (wxBitmap*)node->Data();