diff --git a/app.py b/app.py
index 2f6e16f..c856646 100644
--- a/app.py
+++ b/app.py
@@ -96,3 +96,5 @@ if __name__ == '__main__':
         except KeyboardInterrupt:
             pass
         server.close()
+
+    app.config['transmitter'].close()
\ No newline at end of file