fix error in checking
Revert "fix error in checking"

This reverts commit e786462554299ba3d41b98186eda2e104d5eb3e4.
Merge branch 'unit-test' of github.com:codingsnippets/quest-till-done
Merge branch 'master' of github.com:scheidm/quest-till-done
Merge branch 'master' of github.com:scheidm/quest-till-done
Merge branch 'master' of github.com:scheidm/quest-till-done
Merge branch 't2-filtration' of github.com:mkchin/quest-till-done
Merge branch 't2' of github.com:scheidm/quest-till-done
merge github
Merge branch 't2' of github.com:scheidm/quest-till-done
Merge branch 'master' of github.com:scheidm/quest-till-done