diff --git a/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php b/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php
index 6152c4176..2797a76e9 100644
--- a/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php
+++ b/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php
@@ -451,9 +451,14 @@ class BasicEntityPersister implements EntityPersister
                 continue;
             }
 
-            $params[]       = $identifier[$idField];
-            $where[]        = $this->class->associationMappings[$idField]['joinColumns'][0]['name'];
-            $targetMapping  = $this->em->getClassMetadata($this->class->associationMappings[$idField]['targetEntity']);
+            $params[] = $identifier[$idField];
+            $where[]  = $this->quoteStrategy->getJoinColumnName(
+                $this->class->associationMappings[$idField]['joinColumns'][0],
+                $this->class,
+                $this->platform
+            );
+
+            $targetMapping = $this->em->getClassMetadata($this->class->associationMappings[$idField]['targetEntity']);
 
             switch (true) {
                 case (isset($targetMapping->fieldMappings[$targetMapping->identifier[0]])):
diff --git a/tests/Doctrine/Tests/ORM/Functional/Ticket/GH7012Test.php b/tests/Doctrine/Tests/ORM/Functional/Ticket/GH7012Test.php
new file mode 100644
index 000000000..38f57c57c
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Functional/Ticket/GH7012Test.php
@@ -0,0 +1,82 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\Tests\Models\Quote\User as QuotedUser;
+use Doctrine\Tests\OrmFunctionalTestCase;
+
+final class GH7012Test extends OrmFunctionalTestCase
+{
+    protected function setUp() : void
+    {
+        $this->useModelSet('quote');
+
+        parent::setUp();
+
+        $this->setUpEntitySchema([GH7012UserData::class]);
+    }
+
+    /**
+     * @group 7012
+     */
+    public function testUpdateEntityWithIdentifierAssociationWithQuotedJoinColumn() : void
+    {
+        $user       = new QuotedUser();
+        $user->name = 'John Doe';
+
+        $this->_em->persist($user);
+        $this->_em->flush();
+
+        $userData = new GH7012UserData($user, '123456789');
+
+        $this->_em->persist($userData);
+        $this->_em->flush();
+
+        $userData->name = '4321';
+        $this->_em->flush();
+
+        $platform         = $this->_em->getConnection()->getDatabasePlatform();
+        $quotedTableName  = $platform->quoteIdentifier('quote-user-data');
+        $quotedColumn     = $platform->quoteIdentifier('name');
+        $quotedIdentifier = $platform->quoteIdentifier('user-id');
+
+        self::assertNotEquals('quote-user-data', $quotedTableName);
+        self::assertNotEquals('name', $quotedColumn);
+        self::assertNotEquals('user-id', $quotedIdentifier);
+
+        $queries = $this->_sqlLoggerStack->queries;
+
+        $this->assertSQLEquals(
+            sprintf('UPDATE %s SET %s = ? WHERE %s = ?', $quotedTableName, $quotedColumn, $quotedIdentifier),
+            $queries[$this->_sqlLoggerStack->currentQuery - 1]['sql']
+        );
+    }
+}
+
+
+/**
+ * @Entity
+ * @Table(name="`quote-user-data`")
+ */
+class GH7012UserData
+{
+    /**
+     * @Id
+     * @OneToOne(targetEntity=Doctrine\Tests\Models\Quote\User::class)
+     * @JoinColumn(name="`user-id`", referencedColumnName="`user-id`", onDelete="CASCADE")
+     */
+    public $user;
+
+    /**
+     * @Column(type="string", name="`name`")
+     */
+    public $name;
+
+    public function __construct(QuotedUser $user, string $name)
+    {
+        $this->user = $user;
+        $this->name = $name;
+    }
+}