diff --git a/src/Command/AnalyzeCommand.php b/src/Command/AnalyzeCommand.php
index 4135991..dd734be 100644
--- a/src/Command/AnalyzeCommand.php
+++ b/src/Command/AnalyzeCommand.php
@@ -45,7 +45,7 @@ protected function configure()
             )->addOption(
                 'git',
                 null,
-                InputOption::VALUE_OPTIONAL,
+                InputOption::VALUE_NONE,
                 'All files added to git index will be analyze.'
             );
     }
@@ -91,7 +91,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $files = $input->getOption('files');
 
-        $git = $input->getOption('git');
+        $git = false;
+        if ($input->hasOption('git')) {
+            $git = $input->getOption('git');
+        }
 
         if ($files && $git) {
             throw new \Exception('Options `files` and `git` can not used in combination.');