Merge branch 'issue80' into 'master'

Issue 80 fix

Closes #80

See merge request !39
2 jobs for <span class="ref-name">2.2-dev</span> in 1 minute and 38 seconds
Status Job ID Name Coverage
  Test
passed #4563
whats-open-py3.5

00:01:37

passed #4564
whats-open-py3.6

00:01:38