diff --git a/wxPython/demo/Main.py b/wxPython/demo/Main.py
index 5edc12806a..9faf21fe84 100644
--- a/wxPython/demo/Main.py
+++ b/wxPython/demo/Main.py
@@ -995,7 +995,7 @@ class DemoTaskBarIcon(wx.TaskBarIcon):
         if "wxMSW" in wx.PlatformInfo:
             img.Scale(16, 16)
         elif "wxGTK" in wx.PlatformInfo:
-            img.Scale(22, 22)
+            img.Scale(20, 20)
         # wxMac can be any size upto 128.128....
         icon = wx.IconFromBitmap(img.ConvertToBitmap() )
         return icon
@@ -1018,7 +1018,7 @@ class DemoTaskBarIcon(wx.TaskBarIcon):
     
 
     def OnTaskBarChange(self, evt):
-        icon = self.MakeIcon(images.getRobinImage())
+        icon = self.MakeIcon(images.getBlom10MaskedImage())
         self.SetIcon(icon, "This is a new icon")
 
 
diff --git a/wxPython/demo/encode_bitmaps.py b/wxPython/demo/encode_bitmaps.py
index 37db1b1b85..d298fb4df5 100644
--- a/wxPython/demo/encode_bitmaps.py
+++ b/wxPython/demo/encode_bitmaps.py
@@ -79,6 +79,8 @@ command_lines = [
     "-a -u -n Blom14 bmp_source/toblom14.png images.py",
     "-a -u -n Blom15 bmp_source/toblom15.png images.py",
 
+    "-a -u -n Blom10Masked -m #FFFFFF bmp_source/toblom10.png images.py",
+
 
     "   -u -c bmp_source/001.png throbImages.py",
     "-a -u -c bmp_source/002.png throbImages.py",
diff --git a/wxPython/demo/images.py b/wxPython/demo/images.py
index 8ac24a92f9..939118a897 100644
--- a/wxPython/demo/images.py
+++ b/wxPython/demo/images.py
@@ -5887,3 +5887,31 @@ def getBlom15Image():
     stream = cStringIO.StringIO(getBlom15Data())
     return ImageFromStream(stream)
 
+#----------------------------------------------------------------------
+def getBlom10MaskedData():
+    return \
+'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00 \x00\x00\x00 \x08\x06\x00\
+\x00\x00szz\xf4\x00\x00\x00\x04sBIT\x08\x08\x08\x08|\x08d\x88\x00\x00\x01iID\
+ATx\x9c\xbd\x97Q\xb2\xc3 \x08EA\xdf\x92XS]S\xb2&\xb7\x94\xd8/:\x84J@M\x1f3\
+\xfdI\xb5\xf7\x18.P\x11S\x86H\xb4\xf3h\xa1\x85*0e\xbc\xfd\xde\x03\x88\x08\
+\xd7Z\x81\x88\xa0\xd6zyND.\x88\t0{b\x19\xdb\xb6\x01\x00@)\xc5\x84\xe8\x02H\
+\xf1\xba\xbdBbTv\x17"\x040#\xeeA\\\x04\x15DzJ<\xbaG\xa76\xf5\x16\xcd\x88G\
+\xf6\xb2I%\xc4\x07\xe0\t\xd3y!\xab\x82\xe3\xe3\x01\x06\x88\x9c^\xe6\xdaZ\xef\
+\xf9\x81\xbd\xf0\xe7\xaauB\x8aR\xd9\xa7R\xd6\xce\xa3a\xca\xd8\xf5\xc0(L\xc4\
+\xfdV,\x030D\xe4\xd9\xcf\x00V\xe2\x16\x80\xca\xbe\xf4z\x97\x00Xx\xa5\'\x0c\
+\x01pYDJ,\x1a\x91\xfd\xdd2\x8c\x96\xd6\x13\xb0\x17\x00L\x19\xa3\x1d\x91\xca~\
+\x19,T\xf6\xa6\xfb\x83\x04\xb3\xbc45\x8e\xb5xo\x9f\x16\xef\xf5\x0bL\x19\xcdN\
+(<\xd1F\x9a\xcdh*\xbe\x00\xb8EJ\x10\xeb\xf5F\xa3\x07\xc5\x1a\xff\xd6\x88,\
+\xe8\xa9a\xb4*,\xdfp\x08\x80\xd3\xb0\n3\xf4\xa7T.n\xe7\xd1t\x1eu%Xk,a\x8e\
+\xae\x07\xb8\x1f\xf0\xc7\x9av\xde\x1aO\x1c\xc0\xb9\x17\xac\xb4\xe2\xc8\xe9\
+\x01&\xab\xc0+\xc3\xa88\xc0`\x15\xfcbB\xde\xde\rg\xd2\xc0\xe6\xd4F\x9e\x02`\
+\x08\x00{&|\xfd\xa0\xaa\x8c\xe5\xdb\xb1\x06\x89\x86\x9c\xacw\x10o\xea\r\xf9&\
+G\x80\r\xe3\x00\x00\x00\x00IEND\xaeB`\x82' 
+
+def getBlom10MaskedBitmap():
+    return BitmapFromImage(getBlom10MaskedImage())
+
+def getBlom10MaskedImage():
+    stream = cStringIO.StringIO(getBlom10MaskedData())
+    return ImageFromStream(stream)
+