diff --git a/include/minix/callnr.h b/include/minix/callnr.h
index 4e5f0ed3a..1f674f673 100644
--- a/include/minix/callnr.h
+++ b/include/minix/callnr.h
@@ -64,14 +64,6 @@
 /* Field names for the exit(2) call. */
 #define PM_EXIT_STATUS		m1_i1	/* int */
 
-/* Field names for the gettimeofday(2), clock_*(2), adjtime(2), stime(2) calls.
- */
-#define PM_TIME_CLK_ID		m2_i1	/* clockid_t */
-#define PM_TIME_NOW		m2_i2	/* int */
-#define PM_TIME_SEC		m2_ll1	/* time_t */
-#define PM_TIME_USEC		m2_l2	/* long */
-#define PM_TIME_NSEC		m2_l2	/* long */
-
 /* Field names for the ptrace(2) call. */
 #define PM_PTRACE_PID		m2_i1	/* pid_t */
 #define PM_PTRACE_REQ		m2_i2	/* int */
diff --git a/include/minix/ipc.h b/include/minix/ipc.h
index 0239e2f99..cff4bfa2d 100644
--- a/include/minix/ipc.h
+++ b/include/minix/ipc.h
@@ -145,6 +145,26 @@ typedef struct {
 } mess_sigcalls;
 _ASSERT_MSG_SIZE(mess_sigcalls);
 
+typedef struct {
+	time_t sec;
+
+	clockid_t clk_id;
+	int now;
+	long nsec;
+
+	uint8_t padding[36];
+} mess_lc_pm_time;
+_ASSERT_MSG_SIZE(mess_lc_pm_time);
+
+typedef struct {
+	time_t sec;
+
+	long nsec;
+
+	uint8_t padding[44];
+} mess_pm_lc_time;
+_ASSERT_MSG_SIZE(mess_pm_lc_time);
+
 typedef struct {
 	pid_t pid;
 	int options;
@@ -902,6 +922,7 @@ typedef struct {
 		mess_fs_vfs_readsuper	m_fs_vfs_readsuper;
 		mess_fs_vfs_readwrite	m_fs_vfs_readwrite;
 
+		mess_lc_pm_time		m_lc_pm_time;
 		mess_lc_pm_waitpid	m_lc_pm_waitpid;
 
 		mess_lc_vfs_chown	m_lc_vfs_chown;
@@ -936,6 +957,7 @@ typedef struct {
 		mess_lsys_vfs_copyfd	m_lsys_vfs_copyfd;
 		mess_lsys_vfs_mapdriver	m_lsys_vfs_mapdriver;
 
+		mess_pm_lc_time		m_pm_lc_time;
 		mess_pm_lc_waitpid	m_pm_lc_waitpid;
 
 		mess_pm_lsys_getepinfo	m_pm_lsys_getepinfo;
diff --git a/lib/libc/sys-minix/adjtime.c b/lib/libc/sys-minix/adjtime.c
index 2aaa17b67..37db1aa0b 100644
--- a/lib/libc/sys-minix/adjtime.c
+++ b/lib/libc/sys-minix/adjtime.c
@@ -15,10 +15,10 @@ int adjtime(const struct timeval *delta, struct timeval *olddelta)
   message m;
 
   memset(&m, 0, sizeof(m));
-  m.PM_TIME_CLK_ID = (clockid_t) CLOCK_REALTIME;
-  m.PM_TIME_NOW = 0; /* use adjtime() method to slowly adjust the clock. */
-  m.PM_TIME_SEC = delta->tv_sec;
-  m.PM_TIME_NSEC = delta->tv_usec * 1000; /* convert usec to nsec */
+  m.m_lc_pm_time.clk_id = CLOCK_REALTIME;
+  m.m_lc_pm_time.now = 0; /* use adjtime() method to slowly adjust the clock. */
+  m.m_lc_pm_time.sec = delta->tv_sec;
+  m.m_lc_pm_time.nsec = delta->tv_usec * 1000; /* convert usec to nsec */
 
   if (_syscall(PM_PROC_NR, PM_CLOCK_SETTIME, &m) < 0)
   	return -1;
diff --git a/lib/libc/sys-minix/clock_getres.c b/lib/libc/sys-minix/clock_getres.c
index 3e58be7c6..5c19d8c37 100644
--- a/lib/libc/sys-minix/clock_getres.c
+++ b/lib/libc/sys-minix/clock_getres.c
@@ -14,13 +14,13 @@ int clock_getres(clockid_t clock_id, struct timespec *res)
   message m;
 
   memset(&m, 0, sizeof(m));
-  m.PM_TIME_CLK_ID = clock_id;
+  m.m_lc_pm_time.clk_id = clock_id;
 
   if (_syscall(PM_PROC_NR, PM_CLOCK_GETRES, &m) < 0)
   	return -1;
 
-  res->tv_sec = m.PM_TIME_SEC;
-  res->tv_nsec = m.PM_TIME_NSEC;
+  res->tv_sec = m.m_pm_lc_time.sec;
+  res->tv_nsec = m.m_pm_lc_time.nsec;
 
   return 0;
 }
diff --git a/lib/libc/sys-minix/clock_gettime.c b/lib/libc/sys-minix/clock_gettime.c
index bef4a063a..cad496c70 100644
--- a/lib/libc/sys-minix/clock_gettime.c
+++ b/lib/libc/sys-minix/clock_gettime.c
@@ -14,13 +14,13 @@ int clock_gettime(clockid_t clock_id, struct timespec *res)
   message m;
 
   memset(&m, 0, sizeof(m));
-  m.PM_TIME_CLK_ID = clock_id;
+  m.m_lc_pm_time.clk_id = clock_id;
 
   if (_syscall(PM_PROC_NR, PM_CLOCK_GETTIME, &m) < 0)
   	return -1;
 
-  res->tv_sec = m.PM_TIME_SEC;
-  res->tv_nsec = m.PM_TIME_NSEC;
+  res->tv_sec = m.m_pm_lc_time.sec;
+  res->tv_nsec = m.m_pm_lc_time.nsec;
 
   return 0;
 }
diff --git a/lib/libc/sys-minix/clock_settime.c b/lib/libc/sys-minix/clock_settime.c
index 0b18ef5c3..6e4d1fc00 100644
--- a/lib/libc/sys-minix/clock_settime.c
+++ b/lib/libc/sys-minix/clock_settime.c
@@ -14,10 +14,10 @@ int clock_settime(clockid_t clock_id, const struct timespec *ts)
   message m;
 
   memset(&m, 0, sizeof(m));
-  m.PM_TIME_CLK_ID = clock_id;
-  m.PM_TIME_NOW = 1; /* set time immediately. don't use adjtime() method. */
-  m.PM_TIME_SEC = ts->tv_sec;
-  m.PM_TIME_NSEC = ts->tv_nsec;
+  m.m_lc_pm_time.clk_id = clock_id;
+  m.m_lc_pm_time.now = 1; /* set time immediately. don't use adjtime() method. */
+  m.m_lc_pm_time.sec = ts->tv_sec;
+  m.m_lc_pm_time.nsec = ts->tv_nsec;
 
   if (_syscall(PM_PROC_NR, PM_CLOCK_SETTIME, &m) < 0)
   	return -1;
diff --git a/lib/libc/sys-minix/gettimeofday.c b/lib/libc/sys-minix/gettimeofday.c
index 4c851fdba..a7ecf4844 100644
--- a/lib/libc/sys-minix/gettimeofday.c
+++ b/lib/libc/sys-minix/gettimeofday.c
@@ -18,8 +18,8 @@ int gettimeofday(struct timeval *__restrict tp, void *__restrict tzp)
   if (_syscall(PM_PROC_NR, PM_GETTIMEOFDAY, &m) < 0)
   	return -1;
 
-  tp->tv_sec = m.PM_TIME_SEC;
-  tp->tv_usec = m.PM_TIME_USEC;
+  tp->tv_sec = m.m_pm_lc_time.sec;
+  tp->tv_usec = m.m_pm_lc_time.nsec / 1000;
 
   return 0;
 }
diff --git a/lib/libc/sys-minix/stime.c b/lib/libc/sys-minix/stime.c
index 6846be834..67527dd83 100644
--- a/lib/libc/sys-minix/stime.c
+++ b/lib/libc/sys-minix/stime.c
@@ -12,6 +12,6 @@ int stime(time_t *top)
   message m;
 
   memset(&m, 0, sizeof(m));
-  m.PM_TIME_SEC = *top;
+  m.m_lc_pm_time.sec = *top;
   return(_syscall(PM_PROC_NR, PM_STIME, &m));
 }
diff --git a/servers/pm/time.c b/servers/pm/time.c
index dcc610fd0..c002ba671 100644
--- a/servers/pm/time.c
+++ b/servers/pm/time.c
@@ -27,7 +27,7 @@ int do_gettime()
   if ( (s=getuptime(&ticks, &realtime, &boottime)) != OK)
   	panic("do_time couldn't get uptime: %d", s);
 
-  switch (m_in.PM_TIME_CLK_ID) {
+  switch (m_in.m_lc_pm_time.clk_id) {
 	case CLOCK_REALTIME:
 		clock = realtime;
 		break;
@@ -38,8 +38,8 @@ int do_gettime()
 		return EINVAL; /* invalid/unsupported clock_id */
   }
 
-  mp->mp_reply.PM_TIME_SEC = boottime + (clock / system_hz);
-  mp->mp_reply.PM_TIME_NSEC =
+  mp->mp_reply.m_pm_lc_time.sec = boottime + (clock / system_hz);
+  mp->mp_reply.m_pm_lc_time.nsec =
 	(uint32_t) ((clock % system_hz) * 1000000000ULL / system_hz);
 
   return(OK);
@@ -50,12 +50,12 @@ int do_gettime()
  *===========================================================================*/
 int do_getres()
 {
-  switch (m_in.PM_TIME_CLK_ID) {
+  switch (m_in.m_lc_pm_time.clk_id) {
 	case CLOCK_REALTIME:
 	case CLOCK_MONOTONIC:
 		/* tv_sec is always 0 since system_hz is an int */
-		mp->mp_reply.PM_TIME_SEC = 0;
-		mp->mp_reply.PM_TIME_NSEC = 1000000000 / system_hz;
+		mp->mp_reply.m_pm_lc_time.sec = 0;
+		mp->mp_reply.m_pm_lc_time.nsec = 1000000000 / system_hz;
 		return(OK);
 	default:
 		return EINVAL; /* invalid/unsupported clock_id */
@@ -73,10 +73,10 @@ int do_settime()
       return(EPERM);
   }
 
-  switch (m_in.PM_TIME_CLK_ID) {
+  switch (m_in.m_lc_pm_time.clk_id) {
 	case CLOCK_REALTIME:
-		s= sys_settime(m_in.PM_TIME_NOW, m_in.PM_TIME_CLK_ID,
-			m_in.PM_TIME_SEC, m_in.PM_TIME_NSEC);
+		s = sys_settime(m_in.m_lc_pm_time.now, m_in.m_lc_pm_time.clk_id,
+			m_in.m_lc_pm_time.sec, m_in.m_lc_pm_time.nsec);
 		return(s);
 	case CLOCK_MONOTONIC: /* monotonic cannot be changed */
 	default:
@@ -101,9 +101,9 @@ int do_time()
   if ( (s=getuptime(&ticks, &realtime, &boottime)) != OK)
   	panic("do_time couldn't get uptime: %d", s);
 
-  mp->mp_reply.PM_TIME_SEC = boottime + (realtime / system_hz);
-  mp->mp_reply.PM_TIME_USEC =
-	(uint32_t) ((realtime % system_hz) * 1000000ULL / system_hz);
+  mp->mp_reply.m_pm_lc_time.sec = boottime + (realtime / system_hz);
+  mp->mp_reply.m_pm_lc_time.nsec =
+	(uint32_t) ((realtime % system_hz) * 1000000000ULL / system_hz);
   return(OK);
 }
 
@@ -124,7 +124,7 @@ int do_stime()
   }
   if ( (s=getuptime(&uptime, &realtime, &boottime)) != OK) 
       panic("do_stime couldn't get uptime: %d", s);
-  boottime = m_in.PM_TIME_SEC - (realtime/system_hz);
+  boottime = m_in.m_lc_pm_time.sec - (realtime/system_hz);
 
   s= sys_stime(boottime);		/* Tell kernel about boottime */
   if (s != OK)