diff --git a/constant.go b/constant.go
new file mode 100644
index 0000000..0d87a43
--- /dev/null
+++ b/constant.go
@@ -0,0 +1,7 @@
+package natsio
+
+var Stream = struct {
+	Selly string
+}{
+	Selly: "selly",
+}