diff --git a/psalm.xml b/psalm.xml
index 5e2ca45de..178ff30fd 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -42,7 +42,6 @@
 				<referencedClass name="OC\*" />
 				<referencedClass name="OC" />
 				<referencedClass name="OC\Security\CSP\ContentSecurityPolicyNonceManager" />
-				<referencedClass name="OCA\NotifyPush\Queue\IQueue" />
 			</errorLevel>
 		</UndefinedClass>
 		<UndefinedDocblockClass>
diff --git a/tests/stub.phpstub b/tests/stub.phpstub
index a5ab068eb..156fff6ff 100644
--- a/tests/stub.phpstub
+++ b/tests/stub.phpstub
@@ -661,3 +661,16 @@ namespace OC\Files\Storage\Wrapper{
 		public function getQuota() {}
 	}
 }
+
+
+namespace OCA\NotifyPush\Queue {
+
+	interface IQueue {
+		/**
+		 * @param string $channel
+		 * @param mixed $message
+		 * @return void
+		 */
+		public function push(string $channel, $message);
+	}
+}
\ No newline at end of file