diff --git a/include/asm-h8300/timex.h b/include/asm-h8300/timex.h
index 20413145fabb..23e67013439f 100644
--- a/include/asm-h8300/timex.h
+++ b/include/asm-h8300/timex.h
@@ -6,7 +6,7 @@
 #ifndef _ASM_H8300_TIMEX_H
 #define _ASM_H8300_TIMEX_H
 
-#define CLOCK_TICK_RATE CONFIG_CPU_CLOCK*1000/8192 /* Timer input freq. */
+#define CLOCK_TICK_RATE (CONFIG_CPU_CLOCK*1000/8192) /* Timer input freq. */
 
 typedef unsigned long cycles_t;
 extern short h8300_timer_count;