diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
index 15110261a2252..e02f61a8f4ecc 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
@@ -117,9 +117,11 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
                 }
             }
 
+            $definition->setBindings($bindings);
+
             // reset fields with "merge" behavior
             $abstract
-                ->setBindings($bindings)
+                ->setBindings(array())
                 ->setArguments(array())
                 ->setMethodCalls(array())
                 ->setDecoratedService(null)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
index 21a2810578e97..39078dbaf6576 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\DependencyInjection\Tests\Compiler;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\DependencyInjection\Argument\BoundArgument;
 use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\Compiler\ResolveInstanceofConditionalsPass;
 use Symfony\Component\DependencyInjection\Compiler\ResolveChildDefinitionsPass;
@@ -250,4 +251,18 @@ public function testMergeReset()
         $this->assertEmpty($abstract->getTags());
         $this->assertTrue($abstract->isAbstract());
     }
+
+    public function testBindings()
+    {
+        $container = new ContainerBuilder();
+        $def = $container->register('foo', self::class)->setBindings(array('$toto' => 123));
+        $def->setInstanceofConditionals(array(parent::class => new ChildDefinition('')));
+
+        (new ResolveInstanceofConditionalsPass())->process($container);
+
+        $bindings = $container->getDefinition('foo')->getBindings();
+        $this->assertSame(array('$toto'), array_keys($bindings));
+        $this->assertInstanceOf(BoundArgument::class, $bindings['$toto']);
+        $this->assertSame(123, $bindings['$toto']->getValues()[0]);
+    }
 }