diff --git a/.gitignore b/.gitignore
index 3e52175..22d0d82 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1 @@
-*.swp
-tags
 vendor
diff --git a/LICENSE b/LICENSE
index b57a6c2..80445fb 100644
--- a/LICENSE
+++ b/LICENSE
@@ -20,4 +20,5 @@ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\ No newline at end of file
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
diff --git a/example.php b/example.php
index 595e5c5..e764726 100644
--- a/example.php
+++ b/example.php
@@ -2,7 +2,6 @@
 
 use Deblan\Csv\CsvParser;
 use Deblan\CsvValidator\Validator;
-use Symfony\Component\Validator\Validation;
 use Symfony\Component\Validator\Constraints\Email;
 use Symfony\Component\Validator\Constraints\Date;
 use Symfony\Component\Validator\Constraints\Callback;
@@ -23,7 +22,7 @@ $validator->addFieldConstraint(1, new Date());
 $validator->setExpectedHeaders(['foo', 'bar', 'bim']);
 
 // An line must contain 3 columns
-$validator->addDataConstraint(new Callback(function($data, ExecutionContextInterface $context) {
+$validator->addDataConstraint(new Callback(function ($data, ExecutionContextInterface $context) {
     if (count($data) !== 6) { // 6 because of the legend (3 fields * 2)
         $context->addViolation('The line must contain 3 columns');
     }