diff --git a/include/minix/ipc.h b/include/minix/ipc.h
index 99c988a35..ffe1d7fa7 100644
--- a/include/minix/ipc.h
+++ b/include/minix/ipc.h
@@ -1574,6 +1574,14 @@ typedef struct {
 } mess_vfs_fs_utime;
 _ASSERT_MSG_SIZE(mess_vfs_fs_utime);
 
+typedef struct {
+	int status;
+	uint32_t id;		/* should be cdev_id_t */
+
+	uint8_t padding[48];
+} mess_lchardriver_vfs_reply;
+_ASSERT_MSG_SIZE(mess_lchardriver_vfs_reply);
+
 typedef struct {
 	time_t atime;
 	time_t mtime;
@@ -1719,6 +1727,8 @@ typedef struct {
 
 		mess_lc_vm_rusage	m_lc_vm_rusage;
 
+		mess_lchardriver_vfs_reply m_lchardriver_vfs_reply;
+
 		mess_lexec_pm_exec_new	m_lexec_pm_exec_new;
 
 		mess_li2cdriver_i2c_busc_i2c_exec m_li2cdriver_i2c_busc_i2c_exec;
diff --git a/lib/libblockdriver/driver.c b/lib/libblockdriver/driver.c
index 1c3d5fade..42bca46aa 100644
--- a/lib/libblockdriver/driver.c
+++ b/lib/libblockdriver/driver.c
@@ -369,8 +369,8 @@ static void do_char_open(message *m_ptr, int ipc_status)
   memset(&m_reply, 0, sizeof(m_reply));
 
   m_reply.m_type = CDEV_REPLY;
-  m_reply.CDEV_STATUS = ENXIO;
-  m_reply.CDEV_ID = m_ptr->CDEV_ID;
+  m_reply.m_lchardriver_vfs_reply.status = ENXIO;
+  m_reply.m_lchardriver_vfs_reply.id = m_ptr->CDEV_ID;
 
   send_reply(m_ptr->m_source, &m_reply, ipc_status);
 }
diff --git a/lib/libchardriver/chardriver.c b/lib/libchardriver/chardriver.c
index a8de1ad40..e07d07a8f 100644
--- a/lib/libchardriver/chardriver.c
+++ b/lib/libchardriver/chardriver.c
@@ -138,8 +138,8 @@ void chardriver_reply_task(endpoint_t endpt, cdev_id_t id, int r)
   memset(&m_reply, 0, sizeof(m_reply));
 
   m_reply.m_type = CDEV_REPLY;
-  m_reply.CDEV_STATUS = r;
-  m_reply.CDEV_ID = id;
+  m_reply.m_lchardriver_vfs_reply.status = r;
+  m_reply.m_lchardriver_vfs_reply.id = id;
 
   if ((r = asynsend3(endpt, &m_reply, AMF_NOREPLY)) != OK)
 	printf("chardriver_reply_task: send to %d failed: %d\n", endpt, r);
@@ -240,8 +240,8 @@ static void chardriver_reply(message *mess, int ipc_status, int r)
   case CDEV_IOCTL:
   case CDEV_CANCEL: /* For cancel, this is a reply to the original request! */
 	reply_mess.m_type = CDEV_REPLY;
-	reply_mess.CDEV_STATUS = r;
-	reply_mess.CDEV_ID = mess->CDEV_ID;
+	reply_mess.m_lchardriver_vfs_reply.status = r;
+	reply_mess.m_lchardriver_vfs_reply.id = mess->CDEV_ID;
 	break;
 
   case CDEV_SELECT:
diff --git a/servers/vfs/device.c b/servers/vfs/device.c
index 7e6095a4d..d7008c4a3 100644
--- a/servers/vfs/device.c
+++ b/servers/vfs/device.c
@@ -428,7 +428,7 @@ static int cdev_opcl(
   self->w_drv_sendrec = NULL;
 
   /* Process the reply. */
-  r = dev_mess.CDEV_STATUS;
+  r = dev_mess.m_lchardriver_vfs_reply.status;
 
   if (op == CDEV_OPEN && r >= 0) {
 	/* Some devices need special processing upon open. Such a device is
@@ -595,7 +595,7 @@ int cdev_cancel(dev_t dev)
 	fp->fp_grant = GRANT_INVALID;
   }
 
-  r = dev_mess.CDEV_STATUS;
+  r = dev_mess.m_lchardriver_vfs_reply.status;
   return (r == EAGAIN) ? EINTR : r;
 }
 
@@ -726,9 +726,9 @@ static void cdev_generic_reply(message *m_ptr)
   endpoint_t proc_e;
   int slot;
 
-  proc_e = m_ptr->CDEV_ID;
+  proc_e = m_ptr->m_lchardriver_vfs_reply.id;
 
-  if (m_ptr->CDEV_STATUS == SUSPEND) {
+  if (m_ptr->m_lchardriver_vfs_reply.status == SUSPEND) {
 	printf("VFS: got SUSPEND from %d, not reviving\n", m_ptr->m_source);
 	return;
   }
@@ -750,7 +750,7 @@ static void cdev_generic_reply(message *m_ptr)
 	 */
 	printf("VFS: proc %d not blocked on %d\n", proc_e, m_ptr->m_source);
   } else {
-	revive(proc_e, m_ptr->CDEV_STATUS);
+	revive(proc_e, m_ptr->m_lchardriver_vfs_reply.status);
   }
 }