diff --git a/gui/chromeTabs.py b/gui/chromeTabs.py
index 281b3655b..f3abbd8b0 100644
--- a/gui/chromeTabs.py
+++ b/gui/chromeTabs.py
@@ -495,7 +495,11 @@ class PFTabRenderer:
 
 
         canvas.SetMaskColour((0x12,0x23,0x32))
-        self.tabBitmap = canvas
+        img = canvas.ConvertToImage()
+        if not img.HasAlpha():
+            img.InitAlpha()
+        bmp = wx.BitmapFromImage(img)
+        self.tabBitmap = bmp
 
 class PFAddRenderer:
     def __init__(self, size = (24,12)):
@@ -909,7 +913,8 @@ class PFTabsContainer(wx.Panel):
             width = tab.tabWidth - 6
             posx, posy  = tab.GetPosition()
             if not tab.IsSelected():
-                mdc.DrawBitmap(self.efxBmp, posx, posy - 1, True )
+                if not 'wxMac' in wx.PlatformInfo:
+                    mdc.DrawBitmap(self.efxBmp, posx, posy - 1, True )
                 img = tab.Render().ConvertToImage()
                 img = img.AdjustChannels(1, 1, 1, 0.8)
                 bmp = wx.BitmapFromImage(img)
@@ -918,7 +923,8 @@ class PFTabsContainer(wx.Panel):
                 selected = tab
         if selected:
             posx, posy  = selected.GetPosition()
-            mdc.DrawBitmap(self.efxBmp, posx, posy - 1, True)
+            if not 'wxMac' in wx.PlatformInfo:
+                mdc.DrawBitmap(self.efxBmp, posx, posy - 1, True)
             bmp = selected.Render()
             if self.dragging:
                 img = bmp.ConvertToImage()