diff --git a/src/Commands/Command.php b/src/Commands/Command.php
index 6fd93b3..8088d4e 100644
--- a/src/Commands/Command.php
+++ b/src/Commands/Command.php
@@ -41,7 +41,7 @@ final protected function execute(InputInterface $input, OutputInterface $output)
         }
         if ($this->gitDir === false) {
             $output->writeln('Git is not initialized. Skip setting hooks...');
-            return 0;
+            return SymfonyCommand::SUCCESS;
         }
         $this->lockFile = (null !== $this->lockDir ? ($this->lockDir . '/') : '') . Hook::LOCK_FILE;
 
@@ -52,7 +52,7 @@ final protected function execute(InputInterface $input, OutputInterface $output)
         $this->init($input);
         $this->command();
 
-        return 0;
+        return SymfonyCommand::SUCCESS;
     }
 
     protected function global_dir_fallback()
diff --git a/src/Commands/HookCommand.php b/src/Commands/HookCommand.php
index d1e9c4d..f8b5186 100644
--- a/src/Commands/HookCommand.php
+++ b/src/Commands/HookCommand.php
@@ -34,7 +34,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $contents = Hook::getHookContents($this->composerDir, $this->contents, $this->hook);
         $outputMessage = [];
-        $returnCode    = 0;
+        $returnCode    = SymfonyCommand::SUCCESS;
         exec($contents, $outputMessage, $returnCode);
 
         $output->writeln(implode(PHP_EOL, $outputMessage));