fixed issue #11

[itai192]

this is my first commit to a public repo, so I don't know if I'm doing it right

Description

fixed issue #11

Checklist

• [x] An issue was first created before opening this pull request
• [x] The new code follows the contribution guidelines
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [ ] I have added tests to ensure that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes