diff --git a/Firmware/Teensy/teensy3/usb_desc.c b/Firmware/Teensy/teensy3/usb_desc.c
index a222588..6019a88 100644
--- a/Firmware/Teensy/teensy3/usb_desc.c
+++ b/Firmware/Teensy/teensy3/usb_desc.c
@@ -606,7 +606,7 @@ static uint8_t flightsim_report_desc[] = {
 #define NKRO_INTERFACE_DESC_SIZE	9+9+7
 #define NKRO_HID_DESC_OFFSET	NKRO_INTERFACE_DESC_POS+9
 #else
-#define NKRO_INTERFACE_DESC_POS	0
+#define NKRO_INTERFACE_DESC_SIZE	0
 #endif
 
 #define CONFIG_DESC_SIZE		NKRO_INTERFACE_DESC_POS+NKRO_INTERFACE_DESC_SIZE
diff --git a/readme.md b/readme.md
index beaf55e..222ed51 100644
--- a/readme.md
+++ b/readme.md
@@ -158,7 +158,7 @@ In `arduino\hardware\teensy\avr\cores\teensy3\usb_desc.c` add lines 603-610 and
 606    #define NKRO_INTERFACE_DESC_SIZE	9+9+7
 607    #define NKRO_HID_DESC_OFFSET	NKRO_INTERFACE_DESC_POS+9
 608    #else
-609    #define NKRO_INTERFACE_DESC_POS	0
+609    #define NKRO_INTERFACE_DESC_SIZE	0
 610    #endif
 611    
 612    #define CONFIG_DESC_SIZE		NKRO_INTERFACE_DESC_POS+NKRO_INTERFACE_DESC_SIZE