Fixes potential key ordering issue.
Fixes potential key ordering issue.

is210-2015-fall-01/is210-week-11-synthesizing,is210-faculty/is210-week-11-synthesizing,is210-2015-fall-02/is210-week-11-synthesizing,is210-2015-fall-01/is210-week-11-synthesizing,is210-faculty/is210-week-11-synthesizing,is210-2015-fall-02/is210-week-11-synthesizing