diff --git a/include/wx/defs.h b/include/wx/defs.h
index 921b1b7a14..e35d3e8c97 100644
--- a/include/wx/defs.h
+++ b/include/wx/defs.h
@@ -810,6 +810,7 @@ enum wxStretch
 // and Win32 and is silently ignored under all other platforms
 #define wxTE_RICH           0x0080
 #define wxTE_NO_VSCROLL     0x0100
+#define wxTE_AUTO_SCROLL    0x0200
 
 /*
  * wxComboBox style flags