diff --git a/keyboards/whitefox/mcuconf.h b/keyboards/whitefox/mcuconf.h
index ab1f7d724d..68c29cf68a 100644
--- a/keyboards/whitefox/mcuconf.h
+++ b/keyboards/whitefox/mcuconf.h
@@ -31,7 +31,6 @@
 #define KINETIS_MCG_MODE            KINETIS_MCG_MODE_PEE
 #define KINETIS_PLLCLK_FREQUENCY    96000000UL
 #define KINETIS_SYSCLK_FREQUENCY    48000000UL
-#define KINETIS_XTAL_FREQUENCY      16000000UL
 
 #if 0
 /* FEI mode - 48 MHz with internal 32.768 kHz crystal */