diff --git a/module_usb_audio/endpoint0/endpoint0.c b/module_usb_audio/endpoint0/endpoint0.c
index e026bb39..cbc9d77c 100755
--- a/module_usb_audio/endpoint0/endpoint0.c
+++ b/module_usb_audio/endpoint0/endpoint0.c
@@ -550,7 +550,7 @@ void Endpoint0(chanend c_ep0_out, chanend c_ep0_in, chanend c_audioControl,
                     (unsigned char*)&devDesc_Audio1, sizeof(devDesc_Audio1),
                     cfgDesc_Audio1, sizeof(cfgDesc_Audio1),
                     (char**)&g_strTable, sizeof(g_strTable)/sizeof(char *),
-                    &sp, null, g_curUsbSpeed);
+                    &sp, g_curUsbSpeed);
 #elif FULL_SPEED_AUDIO_2
                 /* Return Audio 2.0 Descriptors for high_speed and full-speed */