diff --git a/src/extensions.py b/src/extensions.py
index 94d7d57fe..022d4003e 100644
--- a/src/extensions.py
+++ b/src/extensions.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 import sys
+import glob 
 from xml.etree.cElementTree import parse
 
 class Module(object):
@@ -83,7 +84,7 @@ def parseFile(filename):
 
 # Parse the xml file
 output_file = sys.argv[1]
-for input_file in sys.argv[2:]:
+for input_file in glob.glob(sys.argv[2]):
     parseFile(input_file)
 
 assert xproto != None