diff --git a/module_usb_audio/usb_buffer/usb_buffer.xc b/module_usb_audio/usb_buffer/usb_buffer.xc
index 98cd678f..10026471 100644
--- a/module_usb_audio/usb_buffer/usb_buffer.xc
+++ b/module_usb_audio/usb_buffer/usb_buffer.xc
@@ -258,6 +258,11 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in,
     XUD_SetReady_In(ep_hid, g_hidData, 1);
 #endif
 
+#if (AUDIO_CLASS == 1)
+    /* In UAC1 we dont use a stream start event (and we are always FS) so mark FB EP ready now */
+    XUD_SetReady_In(ep_aud_fb, fb_clocks, 3);
+#endif
+
     while(1)
     {
         XUD_Result_t result;