diff --git a/mod/parse_url.php b/mod/parse_url.php
index 40eddc3bdd..a14379e709 100644
--- a/mod/parse_url.php
+++ b/mod/parse_url.php
@@ -73,6 +73,7 @@ function parse_url_content(App $a)
 				$hdrs[$k] = $v;
 			}
 		}
+		$type = null;
 		if (array_key_exists('Content-Type', $hdrs)) {
 			$type = $hdrs['Content-Type'];
 		}
diff --git a/src/Model/Item.php b/src/Model/Item.php
index 824e240cc3..4275c18251 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -380,7 +380,7 @@ class Item extends BaseObject
 			$usermode = true;
 		}
 
-		$fields = self::fieldlist($selected, $usermode);
+		$fields = self::fieldlist($usermode);
 
 		$select_fields = self::constructSelectFields($fields, $selected);
 
@@ -487,7 +487,7 @@ class Item extends BaseObject
 			$usermode = true;
 		}
 
-		$fields = self::fieldlist($selected, $usermode);
+		$fields = self::fieldlist($usermode);
 
 		$fields['thread'] = ['mention', 'ignored', 'iid'];
 
@@ -523,7 +523,7 @@ class Item extends BaseObject
 	 *
 	 * @return array field list
 	 */
-	private static function fieldlist($selected, $usermode)
+	private static function fieldlist($usermode)
 	{
 		$fields = [];
 
diff --git a/src/Protocol/ActivityPub/Receiver.php b/src/Protocol/ActivityPub/Receiver.php
index 04da5fa596..a5ba0763db 100644
--- a/src/Protocol/ActivityPub/Receiver.php
+++ b/src/Protocol/ActivityPub/Receiver.php
@@ -461,7 +461,7 @@ class Receiver
 
 		logger('Switch contact ' . $cid . ' (' . $profile['url'] . ') for user ' . $uid . ' to ActivityPub');
 
-		$photo = $profile['photo'];
+		$photo = defaults($profile, 'photo', null);
 		unset($profile['photo']);
 		unset($profile['baseurl']);
 
@@ -478,7 +478,7 @@ class Receiver
 	}
 
 	/**
-	 * 
+	 *
 	 *
 	 * @param $receivers
 	 * @param $actor
@@ -503,12 +503,12 @@ class Receiver
 	}
 
 	/**
-	 * 
+	 *
 	 *
 	 * @param $object_data
 	 * @param array $activity
 	 *
-	 * @return 
+	 * @return
 	 */
 	private static function addActivityFields($object_data, $activity)
 	{
diff --git a/src/Protocol/Diaspora.php b/src/Protocol/Diaspora.php
index 00f4e1702d..0c3a52b2d3 100644
--- a/src/Protocol/Diaspora.php
+++ b/src/Protocol/Diaspora.php
@@ -949,6 +949,7 @@ class Diaspora
 				$person = DBA::selectFirst('fcontact', [], ['network' => Protocol::DIASPORA, 'addr' => $handle]);
 				if (!DBA::isResult($person)) {
 					$person = $r;
+					$person['id'] = 0;
 				}
 			}
 		}
@@ -3429,12 +3430,9 @@ class Diaspora
 		/// @todo - establish "all day" events in Friendica
 		$eventdata["all_day"] = "false";
 
-		if (!$event['adjust']) {
+		$eventdata['timezone'] = 'UTC';
+		if (!$event['adjust'] && $user['timezone']) {
 			$eventdata['timezone'] = $user['timezone'];
-
-			if ($eventdata['timezone'] == "") {
-				$eventdata['timezone'] = 'UTC';
-			}
 		}
 
 		if ($event['start']) {
diff --git a/src/Util/ParseUrl.php b/src/Util/ParseUrl.php
index f2a5eccd39..24089b9cbd 100644
--- a/src/Util/ParseUrl.php
+++ b/src/Util/ParseUrl.php
@@ -141,7 +141,7 @@ class ParseUrl
 		}
 
 		// If the file is too large then exit
-		if ($curlResult->getInfo()['download_content_length'] > 1000000) {
+		if (defaults($curlResult->getInfo(), 'download_content_length', 0) > 1000000) {
 			return $siteinfo;
 		}
 
diff --git a/src/Worker/Delivery.php b/src/Worker/Delivery.php
index f2951cce1f..1c353fb632 100644
--- a/src/Worker/Delivery.php
+++ b/src/Worker/Delivery.php
@@ -39,13 +39,13 @@ class Delivery extends BaseObject
 		$followup = false;
 		$public_message = false;
 
+		$items = [];
 		if ($cmd == self::MAIL) {
 			$target_item = DBA::selectFirst('mail', [], ['id' => $item_id]);
 			if (!DBA::isResult($target_item)) {
 				return;
 			}
 			$uid = $target_item['uid'];
-			$items = [];
 		} elseif ($cmd == self::SUGGESTION) {
 			$target_item = DBA::selectFirst('fsuggest', [], ['id' => $item_id]);
 			if (!DBA::isResult($target_item)) {
@@ -65,7 +65,6 @@ class Delivery extends BaseObject
 			$params = ['order' => ['id']];
 			$itemdata = Item::select([], $condition, $params);
 
-			$items = [];
 			while ($item = Item::fetch($itemdata)) {
 				if ($item['id'] == $parent_id) {
 					$parent = $item;