diff --git a/Hello World/src/SUEX_HelloWorld.cpp b/Hello World/src/SUEX_HelloWorld.cpp
index e0044cc..4e75285 100644
--- a/Hello World/src/SUEX_HelloWorld.cpp	
+++ b/Hello World/src/SUEX_HelloWorld.cpp	
@@ -2,7 +2,7 @@
 #include "RubyUtils/RubyUtils.h"
 
 
-VALUE hello_world() {
+VALUE hello_world(VALUE self) {
   return GetRubyInterface("Hello World!");
 }