diff --git a/README.md b/README.md
index fbde3f4a4e5d72197300f51bd825cd22efb3b84a..c18037bb11e524841749510fb8d219f596fe106e 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ $ sudo apt-get install bc
 Then run using python 3
 
 ```
-$python3 math_server.py
+$ python3 math-server.py
 ```