diff --git a/gns3server/controller/__init__.py b/gns3server/controller/__init__.py
index 85dcf370..9dc8fe02 100644
--- a/gns3server/controller/__init__.py
+++ b/gns3server/controller/__init__.py
@@ -277,7 +277,10 @@ class Controller:
 
         :param compute_id: Compute server identifier
         """
-        compute = self.get_compute(compute_id)
+        try:
+            compute = self.get_compute(compute_id)
+        except aiohttp.web.HTTPNotFound:
+            return
 
         for project in self._projects.values():
             if compute in project.computes: