diff --git a/module_usb_audio/hostactive/hostactive.h b/module_usb_audio/hostactive/hostactive.h
new file mode 100644
index 00000000..378848d3
--- /dev/null
+++ b/module_usb_audio/hostactive/hostactive.h
@@ -0,0 +1,2 @@
+
+void UserHostActive(int active);