diff --git a/cpu/arm920t/s3c24x0/interrupts.c b/cpu/arm920t/s3c24x0/interrupts.c
index ba835f3..3ec9b54 100644
--- a/cpu/arm920t/s3c24x0/interrupts.c
+++ b/cpu/arm920t/s3c24x0/interrupts.c
@@ -190,9 +190,11 @@
  */
 void reset_cpu (ulong ignored)
 {
-	S3C24X0_WATCHDOG * const watchdog;
+	volatile S3C24X0_WATCHDOG * watchdog;
 
 #ifdef CONFIG_TRAB
+	extern void disable_vfd (void);
+
 	disable_vfd();
 #endif