diff --git a/vars/helloWorld.groovy b/vars/helloWorld.groovy
index 2fdb8e3f..250d4e92 100644
--- a/vars/helloWorld.groovy
+++ b/vars/helloWorld.groovy
@@ -1,3 +1,3 @@
-def call(Map config = [:]) {
-    sh "echo Hello ${config.name}. Today is ${config.dayOfWeek}."
+def call(string name, string day {
+    sh "echo Hello ${name}. Today is ${day}."
 }