diff --git a/internal/readablestream/writer.go b/internal/readablestream/writer.go
index 7047a55..e74772e 100644
--- a/internal/readablestream/writer.go
+++ b/internal/readablestream/writer.go
@@ -78,8 +78,8 @@ func (rs *Writer) Write(b []byte) (int, error) {
 }
 
 func (rs *Writer) Close() error {
-	rs.controller.Call("close")
-	return nil
+	_, err := rs.controller.Call("close")
+	return err
 }
 
 func (rs *Writer) Context() context.Context {