diff --git a/kernel/clock.c b/kernel/clock.c
index be6cfa572..c371e4dc8 100644
--- a/kernel/clock.c
+++ b/kernel/clock.c
@@ -67,7 +67,7 @@ static clock_t realtime = 0;
 /* Number of ticks to adjust realtime by. A negative value implies slowing
  * down realtime, a positive value implies speeding it up.
  */
-static clock_t adjtime_delta = 0;
+static int32_t adjtime_delta = 0;
 
 /*
  * The boot processor's timer interrupt handler. In addition to non-boot cpus
@@ -195,7 +195,7 @@ void set_realtime(clock_t newrealtime)
 /*===========================================================================*
  *				set_adjtime_delta			     *
  *===========================================================================*/
-void set_adjtime_delta(clock_t ticks)
+void set_adjtime_delta(int32_t ticks)
 {
   adjtime_delta = ticks;
 }
diff --git a/kernel/proto.h b/kernel/proto.h
index e59c54d6c..9ac2fd483 100644
--- a/kernel/proto.h
+++ b/kernel/proto.h
@@ -16,7 +16,7 @@ struct timer;
 /* clock.c */
 clock_t get_realtime(void);
 void set_realtime(clock_t);
-void set_adjtime_delta(clock_t);
+void set_adjtime_delta(int32_t);
 clock_t get_monotonic(void);
 void set_timer(struct timer *tp, clock_t t, tmr_func_t f);
 void reset_timer(struct timer *tp);
diff --git a/kernel/system/do_settime.c b/kernel/system/do_settime.c
index b9116331a..c28b45e56 100644
--- a/kernel/system/do_settime.c
+++ b/kernel/system/do_settime.c
@@ -17,7 +17,8 @@
  *===========================================================================*/
 int do_settime(struct proc * caller, message * m_ptr)
 {
-  clock_t newclock, ticks;
+  clock_t newclock;
+  int32_t ticks;
   time_t timediff;
   signed long long timediff_ticks;