diff --git a/module_usb_audio/endpoint0/endpoint0.h b/module_usb_audio/endpoint0/endpoint0.h
index 59314dcb..da30bf93 100644
--- a/module_usb_audio/endpoint0/endpoint0.h
+++ b/module_usb_audio/endpoint0/endpoint0.h
@@ -16,10 +16,6 @@
  *  \param c_usb_test Optional chanend to be connected to XUD if test modes required.
  */
 void Endpoint0( chanend c_ep0_out, chanend c_ep0_in, chanend c_audioCtrl, 
-        chanend ?c_mix_ctl,chanend ?c_clk_ctl, chanend ?c_usb_test
-#ifdef EP0_THREAD_COMBINED_WITH_SPI
-  , chanend c_spi, chanend c_spi_ss
-#endif
-);
+        chanend ?c_mix_ctl,chanend ?c_clk_ctl, chanend ?c_usb_test);
 
 #endif