diff --git a/src/hello_world_project/calculator_main.py b/src/hello_world_project/calculator_main.py
index adb59d4..ab37eba 100644
--- a/src/hello_world_project/calculator_main.py
+++ b/src/hello_world_project/calculator_main.py
@@ -1,4 +1,5 @@
 def calculator_main():
+    ''' This function is responsible for the main loop of the program '''
     running = True
     calculation = -1
     while running: