diff --git a/src/Model/Item.php b/src/Model/Item.php
index c4e1c37521..c9024c9cc6 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -4207,7 +4207,7 @@ class Item
 		if (!$mimetype) {
 			try {
 				$curlResult = DI::httpClient()->head($uri, [HttpClientOptions::ACCEPT_CONTENT => HttpClientAccept::JSON_AS, HttpClientOptions::REQUEST => HttpClientRequest::ACTIVITYPUB]);
-				$mimetype = empty($curlResult) ? '' : $curlResult->getContentType();
+				$mimetype = $curlResult->getContentType();
 			} catch (\Throwable $th) {
 				Logger::info('Error while fetching HTTP link via HEAD', ['uid' => $uid, 'uri' => $uri, 'code' => $th->getCode(), 'message' => $th->getMessage()]);
 				return 0;
@@ -4218,7 +4218,7 @@ class Item
 			try {
 				// Issue 14126: Workaround for Mastodon servers that return "application/json" on a "head" request.
 				$curlResult = HTTPSignature::fetchRaw($uri, $uid);
-				$mimetype = empty($curlResult) ? '' : $curlResult->getContentType();
+				$mimetype = $curlResult->getContentType();
 			} catch (\Throwable $th) {
 				Logger::info('Error while fetching HTTP link via signed GET', ['uid' => $uid, 'uri' => $uri, 'code' => $th->getCode(), 'message' => $th->getMessage()]);
 				return 0;
diff --git a/src/Protocol/ATProtocol.php b/src/Protocol/ATProtocol.php
index 64743a8e1b..984bd07f64 100644
--- a/src/Protocol/ATProtocol.php
+++ b/src/Protocol/ATProtocol.php
@@ -166,10 +166,9 @@ final class ATProtocol
 	 * Perform an XRPC post for a given user
 	 * @see https://atproto.com/specs/xrpc#lexicon-http-endpoints
 	 *
-	 * @param integer $uid       User ID
-	 * @param string $url        Endpoints like "com.atproto.repo.createRecord"
-	 * @param [type] $parameters array or StdClass with parameters
-	 * @return stdClass|null
+	 * @param int          $uid        User ID
+	 * @param string       $url        Endpoints like "com.atproto.repo.createRecord"
+	 * @param array|object $parameters array or StdClass with parameters
 	 */
 	public function XRPCPost(int $uid, string $url, $parameters): ?stdClass
 	{