diff --git a/src/PhpAssumptions/Cli.php b/src/PhpAssumptions/Cli.php
index 6d5155b..f40f662 100644
--- a/src/PhpAssumptions/Cli.php
+++ b/src/PhpAssumptions/Cli.php
@@ -102,7 +102,7 @@ public function handle(array $args)
                 break;
         }
 
-        $excludes = $this->getPathsFromList($this->cli->arguments->get('exclude'));
+        $excludes = $this->getPathsFromList((string) $this->cli->arguments->get('exclude'));
 
         $nodeTraverser = new NodeTraverser();
 
@@ -135,7 +135,7 @@ public function handle(array $args)
     private function getPathsFromList($list)
     {
         $paths = [];
-        if (strlen($list) > 0) {
+        if ($list !== '') {
             $items = explode(',', $list);
             foreach ($items as $item) {
                 $paths = array_merge($paths, $this->getPaths($item));