diff --git a/config.json b/config.json
index f5c4f68..bcdc601 100644
--- a/config.json
+++ b/config.json
@@ -13,8 +13,8 @@
       "slug": "hello-world",
       "difficulty": 1,
       "topics": [
-        "strings",
-        "default arguments"
+        "primitives",
+        "methods"
       ]
     },
     {
diff --git a/exercises/hello-world/example.pony b/exercises/hello-world/example.pony
index 36adf30..bfe73a4 100644
--- a/exercises/hello-world/example.pony
+++ b/exercises/hello-world/example.pony
@@ -1,3 +1,2 @@
 primitive HelloWorld
-  fun hello(name: String = "World"): String =>
-    "Hello, " + name + "!"
+  fun hello(): String => "Hello, World!"
diff --git a/exercises/hello-world/test.pony b/exercises/hello-world/test.pony
index 5e36ee8..dc56214 100644
--- a/exercises/hello-world/test.pony
+++ b/exercises/hello-world/test.pony
@@ -12,4 +12,3 @@ class iso _TestHelloWorld is UnitTest
 
   fun apply(h: TestHelper) =>
     h.assert_eq[String]("Hello, World!", HelloWorld.hello())
-    h.assert_eq[String]("Hello, Exercism!", HelloWorld.hello("Exercism"))