diff --git a/kernel/system/do_nice.c b/kernel/system/do_nice.c
deleted file mode 100644
index 72366e82e..000000000
--- a/kernel/system/do_nice.c
+++ /dev/null
@@ -1,49 +0,0 @@
-/* The kernel call implemented in this file:
- *   m_type:	SYS_NICE
- *
- * The parameters for this kernel call are:
- *    m1_i1:	PR_ENDPT   	process number to change priority
- *    m1_i2:	PR_PRIORITY	the new priority
- */
-
-#include "kernel/system.h"
-#include <sys/resource.h>
-
-#if USE_NICE
-
-/*===========================================================================*
- *				  do_nice				     *
- *===========================================================================*/
-PUBLIC int do_nice(struct proc * caller, message * m_ptr)
-{
-/* Change process priority or stop the process. */
-  int proc_nr, pri, new_q ;
-  register struct proc *rp;
-
-  /* Extract the message parameters and do sanity checking. */
-  if(!isokendpt(m_ptr->PR_ENDPT, &proc_nr)) return EINVAL;
-  if (iskerneln(proc_nr)) return(EPERM);
-  pri = m_ptr->PR_PRIORITY;
-  rp = proc_addr(proc_nr);
-
-  /* The value passed in is currently between PRIO_MIN and PRIO_MAX. 
-   * We have to scale this between MIN_USER_Q and MAX_USER_Q to match 
-   * the kernel's scheduling queues.
-   */
-  if (pri < PRIO_MIN || pri > PRIO_MAX) return(EINVAL);
-
-  new_q = MAX_USER_Q + (pri-PRIO_MIN) * (MIN_USER_Q-MAX_USER_Q+1) / 
-      (PRIO_MAX-PRIO_MIN+1);
-  if (new_q < MAX_USER_Q) new_q = MAX_USER_Q;	/* shouldn't happen */
-  if (new_q > MIN_USER_Q) new_q = MIN_USER_Q;	/* shouldn't happen */
-
-  /* Dequeue the process and put it in its new queue if it is runnable. */
-  RTS_SET(rp, RTS_SYS_LOCK);
-  rp->p_max_priority = rp->p_priority = new_q;
-  RTS_UNSET(rp, RTS_SYS_LOCK);
-
-  return(OK);
-}
-
-#endif /* USE_NICE */
-