diff --git a/module_usb_aud_shared/devicedefines.h b/module_usb_aud_shared/devicedefines.h
index 8bc28adf..8c604ec7 100644
--- a/module_usb_aud_shared/devicedefines.h
+++ b/module_usb_aud_shared/devicedefines.h
@@ -21,6 +21,10 @@
 #undef IAP_BUFFERED
 #endif
 
+#if defined(CONNECTOR_30_PIN) && (CONNECTOR_30_PIN == 0)
+#undef CONNECTOR_30_PIN 
+#endif
+
 #if defined(MIDI) && (MIDI == 0)
 #undef MIDI
 #endif