diff --git a/lib/py/src/server/TServer.py b/lib/py/src/server/TServer.py
index c3a978d..fb7100b 100644
--- a/lib/py/src/server/TServer.py
+++ b/lib/py/src/server/TServer.py
@@ -80,7 +80,7 @@
     self.clients = Queue.Queue()
     self.threads = 10
 
-  def setNumThreads(num):
+  def setNumThreads(self, num):
     """Set the number of worker threads that should be created"""
     self.threads = num