diff --git a/gui/chromeTabs.py b/gui/chromeTabs.py
index 9ce433533..281b3655b 100644
--- a/gui/chromeTabs.py
+++ b/gui/chromeTabs.py
@@ -950,7 +950,7 @@ class PFTabsContainer(wx.Panel):
             simg = fxBmp.ConvertToImage()
             if not simg.HasAlpha():
                 simg.InitAlpha()
-            if 'wxMAC' not in wx.PlatformInfo:
+            if 'wxMac' not in wx.PlatformInfo:
                 simg = simg.Blur(2)
             simg = simg.AdjustChannels(0.3,0.3,0.3,0.3)