diff --git a/lib/Controller/PushController.php b/lib/Controller/PushController.php
index ce434ac2c..eb2c58a16 100644
--- a/lib/Controller/PushController.php
+++ b/lib/Controller/PushController.php
@@ -154,7 +154,7 @@ public function removeDevice(): DataResponse {
 			return new DataResponse([], Http::STATUS_UNAUTHORIZED);
 		}
 
-		$tokenId = $this->session->get('token-id');
+		$tokenId = (int)$this->session->get('token-id');
 		try {
 			$token = $this->tokenProvider->getTokenById($tokenId);
 		} catch (InvalidTokenException $e) {