Revert "Merge pull request #5 from screeper/master"

This reverts commit 5b2113e57724770cc65ae9c338e72026205661f1, reversing
changes made to fee1b1266596989310c50ea4653b4af13a0ec00a.
Revert "Revert "Merge pull request #5 from screeper/master""

This reverts commit 743541f78b0ade29a3f0992505a8bdbbe4257e74.
fix false boolean case