diff --git a/wx/lib/agw/aui/auibar.py b/wx/lib/agw/aui/auibar.py
index 6bfa700f..ad350bc4 100644
--- a/wx/lib/agw/aui/auibar.py
+++ b/wx/lib/agw/aui/auibar.py
@@ -36,8 +36,6 @@ import six
 
 from .aui_constants import *
 
-# wxPython version string
-_VERSION_STRING = wx.VERSION_STRING
 
 # AuiToolBar events
 wxEVT_COMMAND_AUITOOLBAR_TOOL_DROPDOWN = wx.NewEventType()
@@ -2612,12 +2610,7 @@ class AuiToolBar(wx.Control):
         # find out if the mouse cursor is inside the dropdown rectangle
         if overflow_rect.Contains((pt.x, pt.y)):
 
-            if _VERSION_STRING < "2.9":
-                leftDown = wx.GetMouseState().LeftDown()
-            else:
-                leftDown = wx.GetMouseState().LeftIsDown()
-
-            if leftDown:
+            if wx.GetMouseState().LeftIsDown():
                 overflow_state = AUI_BUTTON_STATE_PRESSED
             else:
                 overflow_state = AUI_BUTTON_STATE_HOVER