diff --git a/module_usb_audio/warnings.xc b/module_usb_audio/warnings.xc
index 10b859ac..c1646213 100644
--- a/module_usb_audio/warnings.xc
+++ b/module_usb_audio/warnings.xc
@@ -65,11 +65,11 @@ Warnings relating to configuration defines located in this XC source file rather
 
 /* Sanity check on FS channel counts */
 #if (NUM_USB_CHAN_OUT_FS > NUM_USB_CHAN_OUT)
-#error NUM_USB_CHAN_OUT expected to be less than or equal to NUM_USB_CHAN_OUT
+#error NUM_USB_CHAN_OUT_FS expected to be less than or equal to NUM_USB_CHAN_OUT
 #endif
 
 #if (NUM_USB_CHAN_IN_FS > NUM_USB_CHAN_IN)
-#error NUM_USB_CHAN_IN expected to be less than or equal to NUM_USB_CHAN_IN
+#error NUM_USB_CHAN_IN_FS expected to be less than or equal to NUM_USB_CHAN_IN
 #endif