diff --git a/src/Mapping/Driver/ReflectionBasedDriver.php b/src/Mapping/Driver/ReflectionBasedDriver.php
index 9becf228a3..a2900d13e0 100644
--- a/src/Mapping/Driver/ReflectionBasedDriver.php
+++ b/src/Mapping/Driver/ReflectionBasedDriver.php
@@ -32,13 +32,8 @@ private function isRepeatedPropertyDeclaration(ReflectionProperty $property, Cla
                 || $metadata->isInheritedEmbeddedClass($property->name);
         }
 
-        /** @var class-string $declaringClass */
         $declaringClass = $property->class;
 
-        if ($this->isTransient($declaringClass)) {
-            return isset($metadata->fieldMappings[$property->name]);
-        }
-
         if (
             isset($metadata->fieldMappings[$property->name]['declared'])
             && $metadata->fieldMappings[$property->name]['declared'] === $declaringClass
diff --git a/tests/Tests/ORM/Functional/Ticket/GH10450Test.php b/tests/Tests/ORM/Functional/Ticket/GH10450Test.php
index afe75d3bcd..c522049f82 100644
--- a/tests/Tests/ORM/Functional/Ticket/GH10450Test.php
+++ b/tests/Tests/ORM/Functional/Ticket/GH10450Test.php
@@ -32,15 +32,6 @@ public function classesThatOverrideFieldNames(): Generator
         yield 'Entity class that redeclares a protected field inherited from a base entity' => [GH10450EntityChildProtected::class];
         yield 'Entity class that redeclares a protected field inherited from a mapped superclass' => [GH10450MappedSuperclassChildProtected::class];
     }
-
-    public function testFieldsOfTransientClassesAreNotConsideredDuplicate(): void
-    {
-        $em = $this->getTestEntityManager();
-
-        $metadata = $em->getClassMetadata(GH10450Cat::class);
-
-        self::assertArrayHasKey('id', $metadata->fieldMappings);
-    }
 }
 
 /**
@@ -188,38 +179,3 @@ class GH10450MappedSuperclassChildProtected extends GH10450BaseMappedSuperclassP
      */
     protected $field;
 }
-
-abstract class GH10450AbstractEntity
-{
-    /**
-     * @ORM\Column(type="integer")
-     * @ORM\Id
-     * @ORM\GeneratedValue
-     *
-     * @var int
-     */
-    protected $id;
-}
-
-/**
- * @ORM\Entity
- * @ORM\InheritanceType("SINGLE_TABLE")
- * @ORM\DiscriminatorMap({ "cat": "GH10450Cat" })
- * @ORM\DiscriminatorColumn(name="type")
- */
-abstract class GH10450Animal extends GH10450AbstractEntity
-{
-    /**
-     * @ORM\Column(type="text", name="base")
-     *
-     * @var string
-     */
-    private $field;
-}
-
-/**
- * @ORM\Entity
- */
-class GH10450Cat extends GH10450Animal
-{
-}