diff --git a/src/Module/Api/Twitter/ContactEndpoint.php b/src/Module/Api/Twitter/ContactEndpoint.php
index f341019716..58807e6296 100644
--- a/src/Module/Api/Twitter/ContactEndpoint.php
+++ b/src/Module/Api/Twitter/ContactEndpoint.php
@@ -73,7 +73,7 @@ abstract class ContactEndpoint extends BaseApi
 				throw new HTTPException\NotFoundException(DI::l10n()->t('User not found'));
 			}
 
-			$uid = $user['uid'];
+			$uid = (int)$user['uid'];
 		}
 
 		return $uid;
@@ -111,7 +111,7 @@ abstract class ContactEndpoint extends BaseApi
 			'next_cursor_str' => $return['next_cursor_str'],
 			'previous_cursor' => $return['previous_cursor'],
 			'previous_cursor_str' => $return['previous_cursor_str'],
-			'total_count' => $return['total_count'],
+			'total_count' => (int)$return['total_count'],
 		];
 
 		return $return;
@@ -153,7 +153,7 @@ abstract class ContactEndpoint extends BaseApi
 				'pending' => false
 			];
 
-			$total_count = DBA::count('contact', $condition);
+			$total_count = (int)DBA::count('contact', $condition);
 
 			if ($cursor !== -1) {
 				if ($cursor > 0) {
@@ -171,7 +171,7 @@ abstract class ContactEndpoint extends BaseApi
 			// Cursor is on the user-specific contact id since it's the sort field
 			if (count($ids)) {
 				$previous_cursor = -$ids[0];
-				$next_cursor = $ids[count($ids) -1];
+				$next_cursor = (int)$ids[count($ids) -1];
 			}
 
 			// No next page
diff --git a/src/Object/Api/Twitter/User.php b/src/Object/Api/Twitter/User.php
index c646b49241..1cdd699de8 100644
--- a/src/Object/Api/Twitter/User.php
+++ b/src/Object/Api/Twitter/User.php
@@ -89,7 +89,7 @@ class User extends BaseEntity
 	 */
 	public function __construct(array $publicContact, array $apcontact = [], array $userContact = [], $skip_status = false, $include_user_entities = true)
 	{
-		$this->id                      = $publicContact['id'];
+		$this->id                      = (int)$publicContact['id'];
 		$this->id_str                  = (string) $publicContact['id'];
 		$this->name                    = $publicContact['name'];
 		$this->screen_name             = $publicContact['nick'] ?: $publicContact['name'];
@@ -143,10 +143,10 @@ class User extends BaseEntity
 		$this->notifications                  = false;
 
 		// Friendica-specific
-		$this->uid                   = $userContact['uid'] ?? 0;
-		$this->cid                   = $userContact['id'] ?? 0;
-		$this->pid                   = $publicContact['id'];
-		$this->self                  = $userContact['self'] ?? false;
+		$this->uid                   = (int)$userContact['uid'] ?? 0;
+		$this->cid                   = (int)$userContact['id'] ?? 0;
+		$this->pid                   = (int)$publicContact['id'];
+		$this->self                  = (boolean)$userContact['self'] ?? false;
 		$this->network               = $publicContact['network'];
 		$this->statusnet_profile_url = $publicContact['url'];
 	}
diff --git a/tests/src/Module/Api/Twitter/ContactEndpointTest.php b/tests/src/Module/Api/Twitter/ContactEndpointTest.php
index cb8ec57e29..e23b836825 100644
--- a/tests/src/Module/Api/Twitter/ContactEndpointTest.php
+++ b/tests/src/Module/Api/Twitter/ContactEndpointTest.php
@@ -234,7 +234,7 @@ class ContactEndpointTest extends FixtureTest
 			'uid' => 42,
 			'cid' => 44,
 			'pid' => 45,
-			'self' => 0,
+			'self' => false,
 			'network' => 'dfrn',
 			'statusnet_profile_url' => 'http://localhost/profile/friendcontact',
 		];