diff --git a/arch/m68k/lib/time.c b/arch/m68k/lib/time.c
index cbe29e7..ebb2ac5 100644
--- a/arch/m68k/lib/time.c
+++ b/arch/m68k/lib/time.c
@@ -71,7 +71,7 @@
 		timestamp++;
 
 		#if defined(CONFIG_WATCHDOG) || defined (CONFIG_HW_WATCHDOG)
-		if ((timestamp % (CONFIG_SYS_WATCHDOG_FREQ)) == 0) {
+		if (CONFIG_SYS_WATCHDOG_FREQ && (timestamp % (CONFIG_SYS_WATCHDOG_FREQ)) == 0) {
 			WATCHDOG_RESET ();
 		}
 		#endif    /* CONFIG_WATCHDOG || CONFIG_HW_WATCHDOG */