don't use course code as a regex; fixes #4344
don't use course code as a regex; fixes #4344

Change-Id: If44af4b4e2fd81a9fc5f7dc92dec4ad98bf3702b
Reviewed-on: https://gerrit.instructure.com/3227
Tested-by: Hudson <dfb64870173313a9a7b56f814c8e3b33e268497a@instructure.com>
Reviewed-by: Brian Palmer <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@instructure.com>

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