diff --git a/lib_xua/api/xua_buffer.h b/lib_xua/api/xua_buffer.h
index 5e7f65e4..93ca3219 100644
--- a/lib_xua/api/xua_buffer.h
+++ b/lib_xua/api/xua_buffer.h
@@ -60,7 +60,6 @@ void XUA_Buffer(
             in port p_off_mclk
 #if( 0 < HID_CONTROLS )
             , chanend c_hid
-            , in port p_int
 #endif
             , chanend c_aud
         );
@@ -100,7 +99,6 @@ void XUA_Buffer_Ep(chanend c_aud_out,
             in port p_off_mclk
 #if( 0 < HID_CONTROLS )
             , chanend c_hid
-            , in port p_int
 #endif
 #ifdef CHAN_BUFF_CTRL
             , chanend c_buff_ctrl
diff --git a/lib_xua/src/core/buffer/ep/ep_buffer.xc b/lib_xua/src/core/buffer/ep/ep_buffer.xc
index 53244092..5916da17 100644
--- a/lib_xua/src/core/buffer/ep/ep_buffer.xc
+++ b/lib_xua/src/core/buffer/ep/ep_buffer.xc
@@ -122,7 +122,6 @@ void XUA_Buffer(
             in port p_off_mclk
 #if( 0 < HID_CONTROLS )
             , chanend c_hid
-            , in port p_int
 #endif
             , chanend c_aud
 )
@@ -167,7 +166,6 @@ void XUA_Buffer(
                 c_sof, c_aud_ctl, p_off_mclk
 #if( 0 < HID_CONTROLS )
                 , c_hid
-                , p_int
 #endif
 #ifdef CHAN_BUFF_CTRL
                 , c_buff_ctrl
@@ -227,7 +225,6 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
             in port p_off_mclk
 #if( 0 < HID_CONTROLS )
             , chanend c_hid
-            , in port p_int
 #endif
 #ifdef CHAN_BUFF_CTRL
             , chanend c_buff_ctrl