diff --git a/src/Command/Compile.php b/src/Command/Compile.php
index 781bb28..ff30c6c 100644
--- a/src/Command/Compile.php
+++ b/src/Command/Compile.php
@@ -17,6 +17,7 @@
 
 use Yannoff\Component\Console\Command;
 use Yannoff\Component\Console\Definition\Option;
+use Yannoff\Component\Console\Exception\RuntimeException;
 use Yannoff\PhpCodeCompiler\Directory;
 use Yannoff\PhpCodeCompiler\PharBuilder;
 
@@ -54,8 +55,8 @@ public function execute()
         $files = $this->getOption('file') ?? [];
         $meta = $this->getOption('meta') ?? [];
 
-        $output = $this->getOption('output');
-        $main = $this->getOption('main');
+        $main = $this->require('main');
+        $output = $this->require('output');
 
         $this
             ->initBuilder($main)
@@ -225,6 +226,26 @@ protected function fullpath(string $file): string
         return getcwd() . '/' . $file;
     }
 
+    /**
+     * Try to get the required option, raise an exception if not set
+     *
+     * @param string $option The option name
+     *
+     * @return mixed
+     *
+     * @throws RuntimeException If the required option is not set
+     */
+    protected function require(string $option)
+    {
+        $value = $this->getOption($option);
+
+        if (null === $value) {
+            throw new RuntimeException("Mandatory option --{$option} is missing");
+        }
+
+        return $value;
+    }
+
     /**
      * Return the contents wrapped in a comments block
      *