diff --git a/lms/envs/dev_int.py b/lms/envs/dev_int.py
index 83c7fb0aba..12123e12d4 100644
--- a/lms/envs/dev_int.py
+++ b/lms/envs/dev_int.py
@@ -17,7 +17,7 @@ COURSE_LISTINGS = {
     'default' : ['BerkeleyX/CS169.1x/2012_Fall',
                  'BerkeleyX/CS188.1x/2012_Fall',
                  'HarvardX/CS50x/2012',
-                 'HarvardX/PH207x/2012_Fall'
+                 'HarvardX/PH207x/2012_Fall',
                  'MITx/3.091x/2012_Fall',
                  'MITx/6.002x/2012_Fall',
                  'MITx/6.00x/2012_Fall'],