diff --git a/include/api.php b/include/api.php
index 87ce982b0..5969ccd5f 100644
--- a/include/api.php
+++ b/include/api.php
@@ -4766,7 +4766,6 @@ function post_photo_item($hash, $allow_cid, $deny_cid, $allow_gid, $deny_gid, $f
 	$arr['guid']          = System::createUUID();
 	$arr['uid']           = intval(api_user());
 	$arr['uri']           = $uri;
-	$arr['parent-uri']    = $uri;
 	$arr['type']          = 'photo';
 	$arr['wall']          = 1;
 	$arr['resource-id']   = $hash;
diff --git a/mod/photos.php b/mod/photos.php
index bba12aace..e94a3ed8d 100644
--- a/mod/photos.php
+++ b/mod/photos.php
@@ -395,7 +395,6 @@ function photos_post(App $a)
 			$arr['guid']          = System::createUUID();
 			$arr['uid']           = $page_owner_uid;
 			$arr['uri']           = $uri;
-			$arr['parent-uri']    = $uri;
 			$arr['post-type']     = Item::PT_IMAGE;
 			$arr['wall']          = 1;
 			$arr['resource-id']   = $photo['resource-id'];
@@ -560,7 +559,6 @@ function photos_post(App $a)
 					$arr['guid']          = System::createUUID();
 					$arr['uid']           = $page_owner_uid;
 					$arr['uri']           = $uri;
-					$arr['parent-uri']    = $uri;
 					$arr['wall']          = 1;
 					$arr['contact-id']    = $owner_record['id'];
 					$arr['owner-name']    = $owner_record['name'];
@@ -791,7 +789,6 @@ function photos_post(App $a)
 	$arr['guid']          = System::createUUID();
 	$arr['uid']           = $page_owner_uid;
 	$arr['uri']           = $uri;
-	$arr['parent-uri']    = $uri;
 	$arr['type']          = 'photo';
 	$arr['wall']          = 1;
 	$arr['resource-id']   = $resource_id;
diff --git a/src/Model/Event.php b/src/Model/Event.php
index 6f8ed123c..5139abc43 100644
--- a/src/Model/Event.php
+++ b/src/Model/Event.php
@@ -347,7 +347,6 @@ class Event
 				$item_arr['uid']           = $event['uid'];
 				$item_arr['contact-id']    = $event['cid'];
 				$item_arr['uri']           = $event['uri'];
-				$item_arr['parent-uri']    = $event['uri'];
 				$item_arr['guid']          = $event['guid'];
 				$item_arr['plink']         = $arr['plink'] ?? '';
 				$item_arr['post-type']     = Item::PT_EVENT;
diff --git a/src/Model/Item.php b/src/Model/Item.php
index c03722372..e67b86234 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -1633,7 +1633,6 @@ class Item
 		$item['coord']         = trim($item['coord'] ?? '');
 		$item['visible']       = (isset($item['visible']) ? intval($item['visible']) : 1);
 		$item['deleted']       = 0;
-		$item['parent-uri']    = trim(($item['parent-uri'] ?? '') ?: $item['uri']);
 		$item['post-type']     = ($item['post-type'] ?? '') ?: self::PT_ARTICLE;
 		$item['verb']          = trim($item['verb'] ?? '');
 		$item['object-type']   = trim($item['object-type'] ?? '');
@@ -2858,14 +2857,15 @@ class Item
 				unset($datarray["plink"]);
 				$datarray["uri"] = self::newURI($contact['uid'], $datarray["guid"]);
 				$datarray["uri-id"] = ItemURI::getIdByURI($datarray["uri"]);
-				$datarray["parent-uri"] = $datarray["uri"];
-				$datarray["thr-parent"] = $datarray["uri"];
 				$datarray["extid"] = Protocol::DFRN;
 				$urlpart = parse_url($datarray2['author-link']);
 				$datarray["app"] = $urlpart["host"];
 				if (!empty($old_uri_id)) {
 					Post\Media::copy($old_uri_id, $datarray["uri-id"]);
 				}
+
+				unset($datarray["parent-uri"]);
+				unset($datarray["thr-parent"]);
 			} else {
 				$datarray['private'] = self::PUBLIC;
 			}
@@ -3297,7 +3297,6 @@ class Item
 			'network'       => Protocol::DFRN,
 			'gravity'       => GRAVITY_ACTIVITY,
 			'parent'        => $item['id'],
-			'parent-uri'    => $item['uri'],
 			'thr-parent'    => $item['uri'],
 			'owner-id'      => $author_id,
 			'author-id'     => $author_id,
diff --git a/src/Module/Contact/Poke.php b/src/Module/Contact/Poke.php
index 9f2ae7bde..d9fab36c0 100644
--- a/src/Module/Contact/Poke.php
+++ b/src/Module/Contact/Poke.php
@@ -67,7 +67,6 @@ class Poke extends BaseModule
 		$arr['guid']          = System::createUUID();
 		$arr['uid']           = $uid;
 		$arr['uri']           = $uri;
-		$arr['parent-uri']    = $uri;
 		$arr['wall']          = 1;
 		$arr['contact-id']    = $actor['id'];
 		$arr['owner-name']    = $actor['name'];
diff --git a/src/Worker/OnePoll.php b/src/Worker/OnePoll.php
index 93dff93ae..8f1e94580 100644
--- a/src/Worker/OnePoll.php
+++ b/src/Worker/OnePoll.php
@@ -625,6 +625,7 @@ class OnePoll
 					if (empty($datarray['parent-uri'])) {
 						$datarray['parent-uri'] = $datarray['uri'];
 					}
+					unset($datarray['parent-uri']);
 
 					$headers = imap_headerinfo($mbox, $meta->msgno);