diff --git a/src/Symfony/Bridge/Doctrine/CHANGELOG.md b/src/Symfony/Bridge/Doctrine/CHANGELOG.md
index ada3e62928..6369ea3634 100644
--- a/src/Symfony/Bridge/Doctrine/CHANGELOG.md
+++ b/src/Symfony/Bridge/Doctrine/CHANGELOG.md
@@ -10,3 +10,5 @@ CHANGELOG
  * DoctrineType now caches its choice lists in order to improve performance
  * DoctrineType now uses ManagerRegistry::getManagerForClass() if the option "em" is not set
  * UniqueEntity validation constraint now accepts a "repositoryMethod" option that will be used to check for uniqueness instead of the default "findBy"
+ * [BC BREAK] the DbalLogger::log() visibility has been changed from public to
+   protected
diff --git a/src/Symfony/Bridge/Doctrine/Logger/DbalLogger.php b/src/Symfony/Bridge/Doctrine/Logger/DbalLogger.php
index 066ff8a674..921dbdf880 100644
--- a/src/Symfony/Bridge/Doctrine/Logger/DbalLogger.php
+++ b/src/Symfony/Bridge/Doctrine/Logger/DbalLogger.php
@@ -47,7 +47,7 @@ class DbalLogger implements SQLLogger
         }
 
         if (null !== $this->logger) {
-            $this->log($sql.' ('.json_encode($params).')');
+            $this->log($sql, null === $params ? array() : $params);
         }
     }
 
@@ -65,9 +65,10 @@ class DbalLogger implements SQLLogger
      * Logs a message.
      *
      * @param string $message A message to log
+     * @param array  $params  The context
      */
-    public function log($message)
+    protected function log($message, array $params)
     {
-        $this->logger->debug($message);
+        $this->logger->debug($message, $params);
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Logger/DbalLoggerTest.php b/src/Symfony/Bridge/Doctrine/Tests/Logger/DbalLoggerTest.php
new file mode 100644
index 0000000000..ffb5c447a1
--- /dev/null
+++ b/src/Symfony/Bridge/Doctrine/Tests/Logger/DbalLoggerTest.php
@@ -0,0 +1,48 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Doctrine\Tests\Logger;
+
+
+class DbalLoggerTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @dataProvider getLogFixtures
+     */
+    public function testLog($sql, $params, $logParams)
+    {
+        $logger = $this->getMock('Symfony\\Component\\HttpKernel\\Log\\LoggerInterface');
+
+        $dbalLogger = $this
+            ->getMockBuilder('Symfony\\Bridge\\Doctrine\\Logger\\DbalLogger')
+            ->setConstructorArgs(array($logger, null))
+            ->setMethods(array('log'))
+            ->getMock()
+        ;
+
+        $dbalLogger
+            ->expects($this->once())
+            ->method('log')
+            ->with($sql, $logParams)
+        ;
+
+        $dbalLogger->startQuery($sql, $params);
+    }
+
+    public function getLogFixtures()
+    {
+        return array(
+            array('SQL', null, array()),
+            array('SQL', array(), array()),
+            array('SQL', array('foo' => 'bar'), array('foo' => 'bar'))
+        );
+    }
+}