diff --git a/ui/bin/opensnitch-ui b/ui/bin/opensnitch-ui
index 336c5bf0..3725827a 100755
--- a/ui/bin/opensnitch-ui
+++ b/ui/bin/opensnitch-ui
@@ -243,3 +243,7 @@ Examples:
         on_exit()
     except Exception as e:
         print(e)
+    finally:
+        if service:
+            # finish gracefully, closing notifications channel.
+            service.close()
diff --git a/ui/opensnitch/service.py b/ui/opensnitch/service.py
index 0aee9116..3acf5dd9 100644
--- a/ui/opensnitch/service.py
+++ b/ui/opensnitch/service.py
@@ -743,6 +743,11 @@ class UIService(ui_pb2_grpc.UIServicer, QtWidgets.QGraphicsObject):
         elif kwargs['action'] == self.NODE_DELETE:
             self._delete_node(kwargs['peer'])
 
+    def OpenWindow(self):
+        self._stats_dialog.show()
+
+    def close(self):
+        self._on_close()
 
     def PostAlert(self, alert, context):
         proto, addr = self._get_peer(context.peer())
@@ -935,6 +940,3 @@ class UIService(ui_pb2_grpc.UIServicer, QtWidgets.QGraphicsObject):
                 context.cancel()
 
         return node_iter
-
-    def OpenWindow(self):
-        self._stats_dialog.show()