diff --git a/examples/config.rb b/examples/config.rb
index ec62e6edf3..6d550493f2 100644
--- a/examples/config.rb
+++ b/examples/config.rb
@@ -142,7 +142,7 @@
 # end
 
 # Code to run in the master after a worker has been started. The worker's
-# index is passed an an argument.
+# index is passed as an argument.
 #
 # This is called everytime a worker is to be started.
 #