diff --git a/src/Symfony/Component/Console/Command/Command.php b/src/Symfony/Component/Console/Command/Command.php
index e9af834ed3..1b11bb8105 100644
--- a/src/Symfony/Component/Console/Command/Command.php
+++ b/src/Symfony/Component/Console/Command/Command.php
@@ -247,7 +247,7 @@ class Command
      * If this method is used, it overrides the code defined
      * in the execute() method.
      *
-     * @param \Closure $code A \Closure
+     * @param callable $code A callable(InputInterface $input, OutputInterface $output)
      *
      * @return Command The current instance
      *
@@ -255,8 +255,12 @@ class Command
      *
      * @api
      */
-    public function setCode(\Closure $code)
+    public function setCode($code)
     {
+        if (!is_callable($code)) {
+            throw new \InvalidArgumentException('Invalid callable provided to Command::setCode.');
+        }
+
         $this->code = $code;
 
         return $this;
diff --git a/src/Symfony/Component/Console/Tests/Command/CommandTest.php b/src/Symfony/Component/Console/Tests/Command/CommandTest.php
index eb78b8911e..166ce7879e 100644
--- a/src/Symfony/Component/Console/Tests/Command/CommandTest.php
+++ b/src/Symfony/Component/Console/Tests/Command/CommandTest.php
@@ -240,6 +240,31 @@ class CommandTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals('interact called'.PHP_EOL.'from the code...'.PHP_EOL, $tester->getDisplay());
     }
 
+    public function testSetCodeWithNonClosureCallable()
+    {
+        $command = new \TestCommand();
+        $ret = $command->setCode(array($this, 'callableMethodCommand'));
+        $this->assertEquals($command, $ret, '->setCode() implements a fluent interface');
+        $tester = new CommandTester($command);
+        $tester->execute(array());
+        $this->assertEquals('interact called'.PHP_EOL.'from the code...'.PHP_EOL, $tester->getDisplay());
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     * @expectedExceptionMessage Invalid callable provided to Command::setCode.
+     */
+    public function testSetCodeWithNonCallable()
+    {
+        $command = new \TestCommand();
+        $command->setCode(array($this, 'nonExistentMethod'));
+    }
+
+    public function callableMethodCommand(InputInterface $input, OutputInterface $output)
+    {
+        $output->writeln('from the code...');
+    }
+
     public function testAsText()
     {
         $command = new \TestCommand();