diff --git a/packages/orchestration-service/src/routes/sessions.js b/packages/orchestration-service/src/routes/sessions.js
index 092dd39..5e3bc97 100644
--- a/packages/orchestration-service/src/routes/sessions.js
+++ b/packages/orchestration-service/src/routes/sessions.js
@@ -20,14 +20,15 @@ router.get('/:sessionId/history', async (req, res) => {
 });
 
 router.get('/', async (req, res) => {
-    const { limit = EPISODIC.DEFAULT_PAGE_SIZE, offset = EPISODIC.DEFAULT_OFFSET } = req.query;
-    try {
-        const sessions = await memory.getSessions(Number(limit), Number(offset), projectId ?? null);
-        res.json(sessions);
-    } catch (err) {
-        res.status(500).json({error: err.message});
-    }
-})
+  const { limit = EPISODIC.DEFAULT_PAGE_SIZE, offset = EPISODIC.DEFAULT_OFFSET, projectId } = req.query;
+  const parsedProjectId = projectId && projectId !== 'null' ? projectId : null;
+  try {
+    const sessions = await memory.getSessions(Number(limit), Number(offset), parsedProjectId);
+    res.json(sessions);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
 
 router.patch('/:sessionId', async (req, res) => {
     const { name, projectId } = req.body;