diff --git a/doc/api_methods/DeleteList.md b/doc/api_methods/DeleteList.md
index f9932220f3..dea26e5061 100644
--- a/doc/api_methods/DeleteList.md
+++ b/doc/api_methods/DeleteList.md
@@ -4,7 +4,7 @@
 
 ## `bool deleteList(string $list_id)`
 
-This method provides functionality for deleting a new list.
+This method provides functionality for deleting a list that is of the type 'default'.
 
 It returns a boolean value.
 
@@ -24,3 +24,4 @@ Codes description:
 | 20   | List cannot be deleted because it’s used for an automatic email |
 | 21   | List cannot be deleted because it’s used for a form             |
 | 22   | The list couldn’t be deleted from the database                  |
+| 23   | Only lists of the type 'default' can be deleted                 |
diff --git a/mailpoet/lib/API/MP/v1/Segments.php b/mailpoet/lib/API/MP/v1/Segments.php
index 8c2aaafd34..7c32fecb85 100644
--- a/mailpoet/lib/API/MP/v1/Segments.php
+++ b/mailpoet/lib/API/MP/v1/Segments.php
@@ -84,6 +84,9 @@ class Segments {
   public function deleteList(string $listId): bool {
     $this->validateSegmentId($listId);
 
+    // delete is supported only for default segment type
+    $this->validateSegmentType($listId);
+
     $activelyUsedNewslettersSubjects = $this->newsletterSegmentRepository->getSubjectsOfActivelyUsedEmailsForSegments([$listId]);
     if (isset($activelyUsedNewslettersSubjects[$listId])) {
       throw new APIException(
diff --git a/mailpoet/tests/integration/API/MP/SegmentsTest.php b/mailpoet/tests/integration/API/MP/SegmentsTest.php
index f551737047..7bfe779e1a 100644
--- a/mailpoet/tests/integration/API/MP/SegmentsTest.php
+++ b/mailpoet/tests/integration/API/MP/SegmentsTest.php
@@ -229,6 +229,18 @@ class SegmentsTest extends \MailPoetTest {
     }
   }
 
+  public function testItDoesNotAllowDeletingWPSegment(): void {
+    $wpSegment = $this->segmentsRepository->getWPUsersSegment();
+    $this->assertInstanceOf(SegmentEntity::class, $wpSegment);
+    try {
+      $this->getApi()->deleteList((string)$wpSegment->getId());
+      $this->fail('WP list cannot be updated.');
+    } catch (\Exception $e) {
+      expect($e->getMessage())->equals('List of the type \'' . $wpSegment->getType() . '\' is not supported for this action.');
+      expect($e->getCode())->equals(APIException::LIST_TYPE_IS_NOT_SUPPORTED);
+    }
+  }
+
   public function testItDeletesList(): void {
     $segment = $this->createOrUpdateSegment('Test Segment');
     $subscriber = (new Subscriber())