diff --git a/src/Node/Expression/Binary/AbstractBinary.php b/src/Node/Expression/Binary/AbstractBinary.php
index 09530273a..bd6cc6c02 100644
--- a/src/Node/Expression/Binary/AbstractBinary.php
+++ b/src/Node/Expression/Binary/AbstractBinary.php
@@ -16,7 +16,7 @@ use Twig\Compiler;
 use Twig\Node\Expression\AbstractExpression;
 use Twig\Node\Node;
 
-abstract class AbstractBinary extends AbstractExpression
+abstract class AbstractBinary extends AbstractExpression implements BinaryInterface
 {
     /**
      * @param AbstractExpression $left
diff --git a/src/Node/Expression/Binary/BinaryInterface.php b/src/Node/Expression/Binary/BinaryInterface.php
new file mode 100644
index 000000000..eeeb2eb99
--- /dev/null
+++ b/src/Node/Expression/Binary/BinaryInterface.php
@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Twig\Node\Expression\Binary;
+
+use Twig\Node\Expression\AbstractExpression;
+
+/**
+ * @internal
+ */
+interface BinaryInterface
+{
+    public function __construct(AbstractExpression $left, AbstractExpression $right, int $lineno);
+}
diff --git a/src/Node/Expression/Binary/ElvisBinary.php b/src/Node/Expression/Binary/ElvisBinary.php
index 205d1ff45..25522240b 100644
--- a/src/Node/Expression/Binary/ElvisBinary.php
+++ b/src/Node/Expression/Binary/ElvisBinary.php
@@ -14,10 +14,15 @@ namespace Twig\Node\Expression\Binary;
 use Twig\Compiler;
 use Twig\Node\Expression\AbstractExpression;
 use Twig\Node\Expression\OperatorEscapeInterface;
+use Twig\Node\Node;
 
 final class ElvisBinary extends AbstractBinary implements OperatorEscapeInterface
 {
-    public function __construct(AbstractExpression $left, AbstractExpression $right, int $lineno)
+    /**
+     * @param AbstractExpression $left
+     * @param AbstractExpression $right
+     */
+    public function __construct(Node $left, Node $right, int $lineno)
     {
         parent::__construct($left, $right, $lineno);
 
diff --git a/src/Node/Expression/Binary/NullCoalesceBinary.php b/src/Node/Expression/Binary/NullCoalesceBinary.php
index b4fb75032..a047b6030 100644
--- a/src/Node/Expression/Binary/NullCoalesceBinary.php
+++ b/src/Node/Expression/Binary/NullCoalesceBinary.php
@@ -19,11 +19,16 @@ use Twig\Node\Expression\OperatorEscapeInterface;
 use Twig\Node\Expression\Test\DefinedTest;
 use Twig\Node\Expression\Test\NullTest;
 use Twig\Node\Expression\Unary\NotUnary;
+use Twig\Node\Node;
 use Twig\TwigTest;
 
 final class NullCoalesceBinary extends AbstractBinary implements OperatorEscapeInterface
 {
-    public function __construct(AbstractExpression $left, AbstractExpression $right, int $lineno)
+    /**
+     * @param AbstractExpression $left
+     * @param AbstractExpression $right
+     */
+    public function __construct(Node $left, Node $right, int $lineno)
     {
         parent::__construct($left, $right, $lineno);