diff --git a/src/Symfony/Bundle/AsseticBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/AsseticBundle/DependencyInjection/Configuration.php
index 16b9af4431..f221a68f8c 100644
--- a/src/Symfony/Bundle/AsseticBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/AsseticBundle/DependencyInjection/Configuration.php
@@ -12,7 +12,6 @@
 namespace Symfony\Bundle\AsseticBundle\DependencyInjection;
 
 use Symfony\Component\Process\ExecutableFinder;
-use Symfony\Component\Process\Exception\ExecutableNotFoundException;
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
 use Symfony\Component\Config\Definition\ConfigurationInterface;
 
@@ -58,9 +57,9 @@ class Configuration implements ConfigurationInterface
                 ->booleanNode('use_controller')->defaultValue($this->debug)->end()
                 ->scalarNode('read_from')->defaultValue('%kernel.root_dir%/../web')->end()
                 ->scalarNode('write_to')->defaultValue('%assetic.read_from%')->end()
-                ->scalarNode('java')->defaultValue(function() use ($finder) { try { return $finder->find('java'); } catch(ExecutableNotFoundException $ex) { return null; } })->end()
-                ->scalarNode('node')->defaultValue(function() use ($finder) { try { return $finder->find('node'); } catch(ExecutableNotFoundException $ex) { return null; } })->end()
-                ->scalarNode('sass')->defaultValue(function() use ($finder) { try { return $finder->find('sass'); } catch(ExecutableNotFoundException $ex) { return null; } })->end()
+                ->scalarNode('java')->defaultValue(function() use ($finder) { $java = $finder->find('java'); return $java ? $java : '/usr/bin/java'; })->end()
+                ->scalarNode('node')->defaultValue(function() use ($finder) { $node = $finder->find('node'); return $node ? $node : '/usr/bin/node'; })->end()
+                ->scalarNode('sass')->defaultValue(function() use ($finder) { $saas = $finder->find('saas'); return $saas ? $saas : '/usr/bin/saas'; })->end()
             ->end()
 
             // bundles
diff --git a/src/Symfony/Component/Process/Exception/Exception.php b/src/Symfony/Component/Process/Exception/Exception.php
deleted file mode 100644
index 0f4e490d02..0000000000
--- a/src/Symfony/Component/Process/Exception/Exception.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-namespace Symfony\Component\Process\Exception;
-
-/**
- * Base exception interface for this component.
- *
- * @author Johannes M. Schmitt <schmittjoh@gmail.com>
- */
-interface Exception
-{
-}
\ No newline at end of file
diff --git a/src/Symfony/Component/Process/Exception/ExecutableNotFoundException.php b/src/Symfony/Component/Process/Exception/ExecutableNotFoundException.php
deleted file mode 100644
index 7fc87c22ed..0000000000
--- a/src/Symfony/Component/Process/Exception/ExecutableNotFoundException.php
+++ /dev/null
@@ -1,25 +0,0 @@
-<?php
-
-namespace Symfony\Component\Process\Exception;
-
-/**
- * This exception is thrown when an executable is not found.
- *
- * @author Johannes M. Schmitt <schmittjoh@gmail.com>
- */
-class ExecutableNotFoundException extends RuntimeException
-{
-    private $name;
-
-    public function __construct($name)
-    {
-        parent::__construct(sprintf('Could not find executable "%s".', $name));
-
-        $this->name = $name;
-    }
-
-    public function getName()
-    {
-        return $this->name;
-    }
-}
\ No newline at end of file
diff --git a/src/Symfony/Component/Process/Exception/RuntimeException.php b/src/Symfony/Component/Process/Exception/RuntimeException.php
deleted file mode 100644
index 4dd0f5f203..0000000000
--- a/src/Symfony/Component/Process/Exception/RuntimeException.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-namespace Symfony\Component\Process\Exception;
-
-/**
- * RuntimeException for this component.
- *
- * @author Johannes M. Schmitt <schmittjoh@gmail.com>
- */
-class RuntimeException extends \RuntimeException implements Exception
-{
-}
\ No newline at end of file
diff --git a/src/Symfony/Component/Process/ExecutableFinder.php b/src/Symfony/Component/Process/ExecutableFinder.php
index 6c774d6900..630e10b8ee 100644
--- a/src/Symfony/Component/Process/ExecutableFinder.php
+++ b/src/Symfony/Component/Process/ExecutableFinder.php
@@ -11,8 +11,6 @@
 
 namespace Symfony\Component\Process;
 
-use Symfony\Component\Process\Exception\ExecutableNotFoundException;
-
 /**
  * Generic executable finder.
  *
@@ -33,6 +31,13 @@ class ExecutableFinder
         $this->suffixes[] = $suffix;
     }
 
+    /**
+     * Finds an executable by name.
+     *
+     * @param string $name The executable name (without the extension)
+     *
+     * @return string|false The executable path or false if it cannot be found
+     */
     public function find($name)
     {
         $dirs = explode(PATH_SEPARATOR, getenv('PATH') ? getenv('PATH') : getenv('Path'));
@@ -45,6 +50,6 @@ class ExecutableFinder
             }
         }
 
-        throw new ExecutableNotFoundException($name);
+        return false;
     }
-}
\ No newline at end of file
+}
diff --git a/src/Symfony/Component/Process/PhpExecutableFinder.php b/src/Symfony/Component/Process/PhpExecutableFinder.php
index a53a922f66..f15ebe0b52 100644
--- a/src/Symfony/Component/Process/PhpExecutableFinder.php
+++ b/src/Symfony/Component/Process/PhpExecutableFinder.php
@@ -28,11 +28,16 @@ class PhpExecutableFinder
         $this->executableFinder = new ExecutableFinder();
     }
 
+    /**
+     * Finds The PHP executable.
+     *
+     * @return string|false The PHP executable path or false if it cannot be found
+     */
     public function find()
     {
         if ($php = getenv('PHP_PATH')) {
             if (!is_executable($php)) {
-                throw new RuntimeException('The defined PHP_PATH environment variable is not a valid PHP executable.');
+                return false;
             }
 
             return $php;
@@ -53,4 +58,4 @@ class PhpExecutableFinder
 
         return $this->executableFinder->find('php');
     }
-}
\ No newline at end of file
+}
diff --git a/src/Symfony/Component/Process/PhpProcess.php b/src/Symfony/Component/Process/PhpProcess.php
index 1dd15886c2..2bd5600451 100644
--- a/src/Symfony/Component/Process/PhpProcess.php
+++ b/src/Symfony/Component/Process/PhpProcess.php
@@ -67,7 +67,10 @@ class PhpProcess extends Process
     public function run($callback = null)
     {
         if (null === $this->getCommandLine()) {
-            $this->setCommandLine($this->executableFinder->find());
+            if (false === $php = $this->executableFinder->find()) {
+                throw new \RuntimeException('Unable to find the PHP executable.');
+            }
+            $this->setCommandLine($php);
         }
 
         return parent::run($callback);