diff --git a/gns3server/handlers/api/controller/server_handler.py b/gns3server/handlers/api/controller/server_handler.py
index e9a798df..7de4a66a 100644
--- a/gns3server/handlers/api/controller/server_handler.py
+++ b/gns3server/handlers/api/controller/server_handler.py
@@ -95,7 +95,7 @@ class ServerHandler:
         })
     def check_version(request, response):
         if request.json["version"] != __version__:
-            raise HTTPConflict(text="Client version {} differs with server version {}".format(request.json["version"], __version__))
+            raise HTTPConflict(text="Client version {} is not the same as server version {}".format(request.json["version"], __version__))
         response.json({"version": __version__})
 
     @Route.get(