diff --git a/include/wx/choicebk.h b/include/wx/choicebk.h
index 0539b353dd..972a97c6a0 100644
--- a/include/wx/choicebk.h
+++ b/include/wx/choicebk.h
@@ -111,7 +111,7 @@ private:
 // ----------------------------------------------------------------------------
 
 // wxChoicebookEvent is obsolete and defined for compatibility only
-typedef wxBookCtrlEvent wxChoicebookEvent;
+#define wxChoicebookEvent wxBookCtrlEvent
 typedef wxBookCtrlEventFunction wxChoicebookEventFunction;
 #define wxChoicebookEventHandler(func) wxBookCtrlEventHandler(func)
 
diff --git a/include/wx/toolbook.h b/include/wx/toolbook.h
index bfe6211e8f..f3e3e3aad2 100644
--- a/include/wx/toolbook.h
+++ b/include/wx/toolbook.h
@@ -128,7 +128,7 @@ private:
 // ----------------------------------------------------------------------------
 
 // wxToolbookEvent is obsolete and defined for compatibility only
-typedef wxBookCtrlEvent wxToolbookEvent;
+#define wxToolbookEvent wxBookCtrlEvent
 typedef wxBookCtrlEventFunction wxToolbookEventFunction;
 #define wxToolbookEventHandler(func) wxBookCtrlEventHandler(func)
 
diff --git a/include/wx/treebook.h b/include/wx/treebook.h
index 30bc563e0d..a6bd61d2d1 100644
--- a/include/wx/treebook.h
+++ b/include/wx/treebook.h
@@ -229,7 +229,7 @@ private:
 // ----------------------------------------------------------------------------
 
 // wxTreebookEvent is obsolete and defined for compatibility only
-typedef wxBookCtrlEvent wxTreebookEvent;
+#define wxTreebookEvent wxBookCtrlEvent
 typedef wxBookCtrlEventFunction wxTreebookEventFunction;
 #define wxTreebookEventHandler(func) wxBookCtrlEventHandler(func)