diff --git a/lib/Activity/CospendProvider.php b/lib/Activity/CospendProvider.php
index 24d1d5648..90a60f5c1 100644
--- a/lib/Activity/CospendProvider.php
+++ b/lib/Activity/CospendProvider.php
@@ -81,7 +81,10 @@ public function __construct(IURLGenerator $urlGenerator,
 		$this->config = $config;
 		$this->groupManager = $groupManager;
 		$this->appManager = $appManager;
-		$this->projectNames = $projectService->getProjectNames($userId);
+		$this->projectNames = [];
+		if (!is_null($userId)) {
+			$this->projectNames = $projectService->getProjectNames($userId);
+		}
 	}
 
 	/**