diff --git a/CHANGES.rst b/CHANGES.rst
index dc501e15..f03bdf5b 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -55,6 +55,9 @@ Changes in this release include the following:
 
 * Improve calltip stability in pyshell. (#941)
 
+* Fix TypeError in wx.lib.throbber. (#924)
+
+
 
 
 4.0.3 "The show must go on. (Die show-stoppers! Die!)"
diff --git a/demo/Throbber.py b/demo/Throbber.py
index ee80dae4..c3389a5a 100644
--- a/demo/Throbber.py
+++ b/demo/Throbber.py
@@ -46,10 +46,7 @@ class TestPanel(wx.Panel):
             throb.Throbber(self, -1, images, frameDelay = 0.1, reverse = True)
 
         seq = self.throbbers['autoreverse']['throbber'].sequence
-        if isinstance(seq, range):
-            seq = list(seq).append(0)
-        else:
-            seq.append(0)
+        seq.append(0)
 
         self.throbbers['label']['throbber'] = \
             throb.Throbber(self, -1, images, frameDelay = 0.1, label = 'Label')
diff --git a/wx/lib/throbber.py b/wx/lib/throbber.py
index e8985332..f74873f7 100644
--- a/wx/lib/throbber.py
+++ b/wx/lib/throbber.py
@@ -333,7 +333,7 @@ class Throbber(wx.Panel):
             #FIXME: need to make sure values are within range!!!
             self.sequence = sequence
         else:
-            self.sequence = range(self.frames)
+            self.sequence = list(range(self.frames))
 
         if running:
             self.Start()