diff --git a/04_UDEF/main_04_UDEF_a.cpp b/04_UDEF/main_04_UDEF_a.cpp
index 53b9922..102c1ef 100644
--- a/04_UDEF/main_04_UDEF_a.cpp
+++ b/04_UDEF/main_04_UDEF_a.cpp
@@ -37,7 +37,7 @@ void doCalculation(calctype a, calctype b){
 }
 
 
-int main(int argc, char** argv, char** envp){
+int main(){
 
 	calctype a;
 	calctype b;