diff --git a/exercises/hello-world/hello-world.php b/exercises/hello-world/hello-world.php
index 439fedcc..6f8ce238 100644
--- a/exercises/hello-world/hello-world.php
+++ b/exercises/hello-world/hello-world.php
@@ -5,7 +5,7 @@
 // It's been provided as a convenience to get you started writing code faster.
 //
 
-function helloWorld($name = null)
+function helloWorld()
 {
     //
     // YOUR CODE GOES HERE
diff --git a/exercises/hello-world/hello-world_test.php b/exercises/hello-world/hello-world_test.php
index 5253b7c3..468a4f9a 100644
--- a/exercises/hello-world/hello-world_test.php
+++ b/exercises/hello-world/hello-world_test.php
@@ -4,18 +4,8 @@
 
 class HelloWorldTest extends PHPUnit\Framework\TestCase
 {
-    public function testNoName()
+    public function testHelloWorld()
     {
         $this->assertEquals('Hello, World!', helloWorld());
     }
-
-    public function testSampleName()
-    {
-        $this->assertEquals('Hello, Alice!', helloWorld('Alice'));
-    }
-
-    public function testAnotherSampleName()
-    {
-        $this->assertEquals('Hello, Bob!', helloWorld('Bob'));
-    }
 }