diff --git a/core/modules/migrate/src/Entity/Migration.php b/core/modules/migrate/src/Entity/Migration.php
index 2c14c3a..35d5b63 100644
--- a/core/modules/migrate/src/Entity/Migration.php
+++ b/core/modules/migrate/src/Entity/Migration.php
@@ -418,15 +418,15 @@ public function setProcessOfProperty($field_name, $process) {
   /**
    * {@inheritdoc}
    */
-  public function mergeProcessOfProperty($field_name, array $process) {
+  public function mergeProcessOfProperty($field_name, array $process_array) {
     // If we already have a process value then merge the incoming process array
-    //otherwise simply set it.
+    // otherwise simply set it.
     $current_process = $this->getProcess();
     if (isset($current_process[$field_name])) {
-      $this->process = NestedArray::mergeDeepArray([$current_process, $this->getProcessNormalized([$field_name => $process])], TRUE);
+      $this->process = NestedArray::mergeDeepArray([$current_process, $this->getProcessNormalized([$field_name => $process_array])], TRUE);
     }
     else {
-      $this->setProcessOfProperty($field_name, $process);
+      $this->setProcessOfProperty($field_name, $process_array);
     }
 
     return $this;
diff --git a/core/modules/migrate/src/Entity/MigrationInterface.php b/core/modules/migrate/src/Entity/MigrationInterface.php
index fc575a2..c782bee 100644
--- a/core/modules/migrate/src/Entity/MigrationInterface.php
+++ b/core/modules/migrate/src/Entity/MigrationInterface.php
@@ -217,7 +217,7 @@ public function setProcessOfProperty($field_name, $process);
    *
    * @param string $field_name
    *   The field name of which to set the process.
-   * @param array $process
+   * @param array $process_array
    *   An array of process data.
    *
    * @return $this
@@ -225,7 +225,7 @@ public function setProcessOfProperty($field_name, $process);
    *
    * @see Drupal\migrate_drupal\Plugin\migrate\load\LoadEntity::processLinkField().
    */
-  public function mergeProcessOfProperty($field_name, array $process);
+  public function mergeProcessOfProperty($field_name, array $process_array);
 
   /**
    * Get the current system of record of the migration.