diff --git a/typo3/sysext/form/Classes/Domain/Finishers/AbstractFinisher.php b/typo3/sysext/form/Classes/Domain/Finishers/AbstractFinisher.php
index 337ddabe8173ba2906bf2a02cc77bc3c1aa8fa9a..f7f50aefa7ac513be1c729df5dc7e3b9a2acbd1a 100644
--- a/typo3/sysext/form/Classes/Domain/Finishers/AbstractFinisher.php
+++ b/typo3/sysext/form/Classes/Domain/Finishers/AbstractFinisher.php
@@ -94,6 +94,14 @@ abstract class AbstractFinisher implements FinisherInterface
         $this->shortFinisherIdentifier = preg_replace('/Finisher$/', '', $this->finisherIdentifier);
     }
 
+    /**
+     * @return string
+     */
+    public function getFinisherIdentifier(): string
+    {
+        return $this->finisherIdentifier;
+    }
+
     /**
      * @param array $options configuration options in the format ['option1' => 'value1', 'option2' => 'value2', ...]
      */
diff --git a/typo3/sysext/form/Classes/Domain/Runtime/FormRuntime.php b/typo3/sysext/form/Classes/Domain/Runtime/FormRuntime.php
index 927d173f81ae98da66eef02cc75e7612699270bd..92ff95975d7d15020487f43c0f1600f5e4103946 100644
--- a/typo3/sysext/form/Classes/Domain/Runtime/FormRuntime.php
+++ b/typo3/sysext/form/Classes/Domain/Runtime/FormRuntime.php
@@ -1044,8 +1044,12 @@ class FormRuntime implements RootRenderableInterface, \ArrayAccess
 
         $finisherIdentifier = '';
         if ($this->getCurrentFinisher() !== null) {
-            $finisherIdentifier = (new \ReflectionClass($this->getCurrentFinisher()))->getShortName();
-            $finisherIdentifier = preg_replace('/Finisher$/', '', $finisherIdentifier);
+            if (method_exists($this->getCurrentFinisher(), 'getFinisherIdentifier')) {
+                $finisherIdentifier = $this->getCurrentFinisher()->getFinisherIdentifier();
+            } else {
+                $finisherIdentifier = (new \ReflectionClass($this->getCurrentFinisher()))->getShortName();
+                $finisherIdentifier = preg_replace('/Finisher$/', '', $finisherIdentifier);
+            }
         }
 
         return GeneralUtility::makeInstance(