diff --git a/examples/hello.dm b/examples/hello.dm
index 1871b52..e5f26cb 100644
--- a/examples/hello.dm
+++ b/examples/hello.dm
@@ -1,4 +1,4 @@
-extern fn println(message: Any)
+extern fn println(message: Any) -> Void
 
 fn main()
     let x = "Hello, World!"