diff --git a/Makefile b/Makefile
index d472e52..db46cbe 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
 
 
-bin/hello-world: src/hello_world.cc
-	g++ src/hello_world.cc -o bin/hello-world
+bin/hello-world: src/hello_world.cpp
+	g++ src/hello_world.cpp -o bin/hello-world
diff --git a/src/hello_world.cc b/src/hello_world.cpp
similarity index 100%
rename from src/hello_world.cc
rename to src/hello_world.cpp