diff --git a/src/unitdev04/endpoint_at.py b/src/unitdev04/endpoint_at.py
index b6e0bfb..21c53f4 100644
--- a/src/unitdev04/endpoint_at.py
+++ b/src/unitdev04/endpoint_at.py
@@ -38,4 +38,4 @@ try:
         pass
 except KeyboardInterrupt:
     print("\nProgram terminated.")
-    ser.close()
+    ser.close()
\ No newline at end of file