diff --git a/module_usb_audio/devicedefines.h b/module_usb_audio/devicedefines.h
index 3e548b80..ffc4b6f8 100644
--- a/module_usb_audio/devicedefines.h
+++ b/module_usb_audio/devicedefines.h
@@ -769,6 +769,14 @@
     #endif
 #endif
 
+#ifndef XUD_PWR_CFG
+    #ifdef SELF_POWERED
+        #define XUD_PWR_CFG XUD_PWR_SELF
+    #else
+        #define XUD_PWR_CFG XUD_PWR_BUS
+    #endif
+#endif
+
 /* Mixer defines */
 
 /**
diff --git a/module_usb_audio/main.xc b/module_usb_audio/main.xc
index 5559f4ad..6ef44601 100755
--- a/module_usb_audio/main.xc
+++ b/module_usb_audio/main.xc
@@ -224,12 +224,6 @@ void xscope_user_init()
 }
 #endif
 
-#ifdef SELF_POWERED
-#define pwrConfig XUD_PWR_SELF
-#else
-#define pwrConfig XUD_PWR_BUS
-#endif
-
 /* Core USB Audio functions - must be called on the Tile connected to the USB Phy */
 void usb_audio_core(chanend c_mix_out
 #ifdef MIDI
@@ -262,11 +256,11 @@ void usb_audio_core(chanend c_mix_out
 #if (AUDIO_CLASS==2)
         XUD_Manager(c_xud_out, ENDPOINT_COUNT_OUT, c_xud_in, ENDPOINT_COUNT_IN,
             c_sof, epTypeTableOut, epTypeTableIn, p_usb_rst,
-            clk, 1, XUD_SPEED_HS, pwrConfig);
+            clk, 1, XUD_SPEED_HS, XUD_PWR_CFG);
 #else
         XUD_Manager(c_xud_out, ENDPOINT_COUNT_OUT, c_xud_in, ENDPOINT_COUNT_IN,
             c_sof, epTypeTableOut, epTypeTableIn, p_usb_rst,
-            clk, 1, XUD_SPEED_FS, pwrConfig);
+            clk, 1, XUD_SPEED_FS, XUD_PWR_CFG);
 #endif
 
         /* USB Packet buffering Core */