diff --git a/wxPython/wx/lib/mixins/listctrl.py b/wxPython/wx/lib/mixins/listctrl.py
index 99cd83ee4a..c370663960 100644
--- a/wxPython/wx/lib/mixins/listctrl.py
+++ b/wxPython/wx/lib/mixins/listctrl.py
@@ -226,7 +226,10 @@ class ListCtrlAutoWidthMixin:
 
             We automatically resize the last column in the list.
         """
-        wx.CallAfter(self._doResize)
+        if 'gtk2' in wx.PlatformInfo:
+            self._doResize()
+        else:
+            wx.CallAfter(self._doResize)
         event.Skip()