diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index a23d193a3..8de9b12fa 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -41,8 +41,20 @@ public function getConfigTreeBuilder()
         $resolversPrototypeNode = $rootNode
             ->children()
                 ->arrayNode('resolvers')
-                    ->useAttributeAsKey('name')
-                    ->prototype('array')
+                ->beforeNormalization()
+                    ->ifTrue(function ($v) { return !is_array($v) || (is_array($v) && !array_key_exists('default', $v)); })
+                    ->then(function ($v) {
+                        if (false == is_array($v)) {
+                            $v = array();
+                        }
+
+                        $v['default'] = array('web_path' => null);
+
+                        return $v;
+                    })
+                ->end()
+                ->useAttributeAsKey('name')
+                ->prototype('array')
         ;
         $this->addResolversSections($resolversPrototypeNode);
 
diff --git a/Tests/DependencyInjection/ConfigurationTest.php b/Tests/DependencyInjection/ConfigurationTest.php
index 26baf6ab0..7f9febed2 100644
--- a/Tests/DependencyInjection/ConfigurationTest.php
+++ b/Tests/DependencyInjection/ConfigurationTest.php
@@ -4,6 +4,7 @@
 use Liip\ImagineBundle\DependencyInjection\Configuration;
 use Liip\ImagineBundle\DependencyInjection\Factory\Loader\LoaderFactoryInterface;
 use Liip\ImagineBundle\DependencyInjection\Factory\Resolver\ResolverFactoryInterface;
+use Liip\ImagineBundle\DependencyInjection\Factory\Resolver\WebPathResolverFactory;
 use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
 use Symfony\Component\Config\Definition\ConfigurationInterface;
 use Symfony\Component\Config\Definition\Processor;
@@ -75,7 +76,7 @@ public function testAllowToUseLoaderFactorySeveralTimes()
     public function testInjectResolverFactoryConfig()
     {
         $config = $this->processConfiguration(
-            new Configuration(array(new BarResolverFactory), array()),
+            new Configuration(array(new BarResolverFactory, new WebPathResolverFactory), array()),
             array(array(
                 'resolvers' => array(
                     'aResolver' => array(
@@ -98,7 +99,7 @@ public function testInjectResolverFactoryConfig()
     public function testAllowToUseResolverFactorySeveralTimes()
     {
         $config = $this->processConfiguration(
-            new Configuration(array(new BarResolverFactory), array()),
+            new Configuration(array(new BarResolverFactory, new WebPathResolverFactory), array()),
             array(array(
                 'resolvers' => array(
                     'aResolver' => array(
@@ -121,6 +122,42 @@ public function testAllowToUseResolverFactorySeveralTimes()
         $this->assertArrayHasKey('anotherResolver', $config['resolvers']);
     }
 
+    public function testSetWebPathAsDefaultResolverIfNotDefined()
+    {
+        $config = $this->processConfiguration(
+            new Configuration(array(new WebPathResolverFactory), array()),
+            array(array(
+                'resolvers' => array(
+                )
+            ))
+        );
+
+        $this->assertArrayHasKey('resolvers', $config);
+        $this->assertArrayHasKey('default', $config['resolvers']);
+        $this->assertArrayHasKey('web_path', $config['resolvers']['default']);
+    }
+
+    public function testShouldNotOverwriteDefaultResolverIfDefined()
+    {
+        $config = $this->processConfiguration(
+            new Configuration(array(new BarResolverFactory, new WebPathResolverFactory), array()),
+            array(array(
+                'resolvers' => array(
+                    'default' => array(
+                        'bar' => array(
+                            'bar_option' => 'theValue'
+                        )
+                    ),
+                )
+
+            ))
+        );
+
+        $this->assertArrayHasKey('resolvers', $config);
+        $this->assertArrayHasKey('default', $config['resolvers']);
+        $this->assertArrayHasKey('bar', $config['resolvers']['default']);
+    }
+
     /**
      * @param ConfigurationInterface $configuration
      * @param array $configs