diff --git a/src/Resources/config/validation.xml b/src/Resources/config/validation.xml
deleted file mode 100644
index 51684cb1..00000000
--- a/src/Resources/config/validation.xml
+++ /dev/null
@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
-                    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-                    xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping
-                    http://symfony.com/schema/dic/services/constraint-mapping-1.0.xsd">
-    <class name="Sylius\Component\Core\Model\Order">
-        <property name="payments">
-            <constraint name="Count">
-                <option name="min">0</option>
-                <option name="max">1</option>
-                <option name="groups">sylius</option>
-            </constraint>
-        </property>
-    </class>
-</constraint-mapping>