diff --git a/src/blink_led.c b/src/blink_led.c
index aabc5a9..f8e9485 100644
--- a/src/blink_led.c
+++ b/src/blink_led.c
@@ -8,7 +8,7 @@
 // disable watchdog,
 // and DO NOT disable low voltage programming.
 // The rest of fuses are left as default.
-__code uint16_t __at (_CONFIG1) __configword = _WDTE_OFF & _BOREN_ON & _CP_OFF;
+__code uint16_t __at (_CONFIG1) __configword = _FOSC_INTOSC & _CLKOUTEN_OFF & _WDTE_OFF & _BOREN_ON & _CP_OFF;
 
 #define LED_PORT PORTCbits.RC5
 #define LED_TRIS TRISCbits.TRISC5