diff --git a/handler.go b/handler.go
index 2e195eb..0ce5f66 100644
--- a/handler.go
+++ b/handler.go
@@ -34,6 +34,6 @@ func Ready() {
 	panic("Ready is not supported in non-JS environments")
 }
 
-func WaitForCompletion() {
-	panic("WaitForCompletion is not supported in non-JS environments")
+func Done() <-chan struct{} {
+	panic("Done is not supported in non-JS environments")
 }