diff --git a/src/auth/auth.service.ts b/src/auth/auth.service.ts
index 75fe1a0..7bbf27f 100644
--- a/src/auth/auth.service.ts
+++ b/src/auth/auth.service.ts
@@ -29,7 +29,10 @@ export async function getSession(
   if (session === null) return null;
 
   const user = await userModel.findById(session.user);
-  if (user === null) return null;
+  if (user === null) {
+    await deleteSession(sessionId);
+    return null;
+  }
 
   return {
     sid: session.id,