diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php
index 5fdbe5686dbfa..72b093043bf15 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php
@@ -39,6 +39,10 @@ protected function processValue($value, $isRoot = false)
             return self::register($this->container, $value->getValues());
         }
 
+        if ($value instanceof Definition) {
+            $value->setBindings(parent::processValue($value->getBindings()));
+        }
+
         if (!$value instanceof Definition || !$value->hasTag('container.service_locator')) {
             return parent::processValue($value, $isRoot);
         }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ServiceLocatorTagPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ServiceLocatorTagPassTest.php
index 25063d35ff3b5..bf6428ee2de47 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ServiceLocatorTagPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ServiceLocatorTagPassTest.php
@@ -13,6 +13,7 @@
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\DependencyInjection\Argument\BoundArgument;
+use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
 use Symfony\Component\DependencyInjection\Compiler\ServiceLocatorTagPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
@@ -143,4 +144,16 @@ public function testBindingsAreCopied()
         $this->assertSame(['foo'], array_keys($locator->getBindings()));
         $this->assertInstanceOf(BoundArgument::class, $locator->getBindings()['foo']);
     }
+
+    public function testBindingsAreProcessed()
+    {
+        $container = new ContainerBuilder();
+
+        $definition = $container->register('foo')
+            ->setBindings(['foo' => new ServiceLocatorArgument()]);
+
+        (new ServiceLocatorTagPass())->process($container);
+
+        $this->assertInstanceOf(Reference::class, $definition->getBindings()['foo']->getValues()[0]);
+    }
 }