diff --git a/dbusmock/templates/networkmanager.py b/dbusmock/templates/networkmanager.py
index d629a8b7..5352a4e0 100644
--- a/dbusmock/templates/networkmanager.py
+++ b/dbusmock/templates/networkmanager.py
@@ -810,7 +810,7 @@ def SettingsGetConnectionByUuid(self, conn_uuid):
         settings = self.conn.GetSettings()
         if settings["connection"]["uuid"] == conn_uuid:
             return o
-    raise dbus.exceptions.DBusException(f"There was no connection with uuid {conn_uuid}")
+    raise dbus.exceptions.DBusException("No connection with the UUID was found.")
 
 
 def ConnectionUpdate(self, settings):
diff --git a/tests/test_networkmanager.py b/tests/test_networkmanager.py
index 23b54407..26414e2b 100644
--- a/tests/test_networkmanager.py
+++ b/tests/test_networkmanager.py
@@ -585,9 +585,8 @@ def test_get_conn_by_uuid(self):
         connectionPath = self.settings.AddConnection(settings)
         self.assertEqual(self.settings.GetConnectionByUuid(uuid), connectionPath)
 
-        fakeuuid = "123123123213213"
-        with self.assertRaisesRegex(dbus.exceptions.DBusException, f".*uuid.*{fakeuuid}$"):
-            self.settings.GetConnectionByUuid(fakeuuid)
+        with self.assertRaisesRegex(dbus.exceptions.DBusException, "No connection with the UUID was found."):
+            self.settings.GetConnectionByUuid("123123123213213")
 
 
 if __name__ == "__main__":