diff --git a/gns3server/handlers/api/controller/server_handler.py b/gns3server/handlers/api/controller/server_handler.py
index 69d9e91c..298c3c9a 100644
--- a/gns3server/handlers/api/controller/server_handler.py
+++ b/gns3server/handlers/api/controller/server_handler.py
@@ -49,7 +49,7 @@ class ServerHandler:
 
         # close all the projects first
         controller = Controller.instance()
-        projects = controller.projects
+        projects = controller.projects.values()
 
         tasks = []
         for project in projects: