diff --git a/lib/isc/include/isc/timer.h b/lib/isc/include/isc/timer.h
index 78a0a583df..ac3133fa31 100644
--- a/lib/isc/include/isc/timer.h
+++ b/lib/isc/include/isc/timer.h
@@ -196,27 +196,6 @@ isc_timer_reset(isc_timer_t *timer, isc_timertype_t type,
  *\li	Unexpected error
  */
 
-isc_result_t
-isc_timer_touch(isc_timer_t *timer);
-/*%<
- * Set the last-touched time of 'timer' to the current time.
- *
- * Requires:
- *
- *\li	'timer' is a valid once timer.
- *
- * Ensures:
- *
- *\li	An idle timeout will not be generated until at least Now + the
- *	timer's interval if 'timer' is a once timer with a non-zero
- *	interval.
- *
- * Returns:
- *
- *\li	Success
- *\li	Unexpected error
- */
-
 void
 isc_timer_attach(isc_timer_t *timer, isc_timer_t **timerp);
 /*%<
diff --git a/lib/isc/timer.c b/lib/isc/timer.c
index fad06767ae..02eeafe4e8 100644
--- a/lib/isc/timer.c
+++ b/lib/isc/timer.c
@@ -420,36 +420,6 @@ isc_timer_gettype(isc_timer_t *timer) {
 	return (t);
 }
 
-isc_result_t
-isc_timer_touch(isc_timer_t *timer) {
-	isc_result_t result;
-	isc_time_t now;
-
-	/*
-	 * Set the last-touched time of 'timer' to the current time.
-	 */
-
-	REQUIRE(VALID_TIMER(timer));
-
-	LOCK(&timer->lock);
-
-	/*
-	 * We'd like to
-	 *
-	 *	REQUIRE(timer->type == isc_timertype_once);
-	 *
-	 * but we cannot without locking the manager lock too, which we
-	 * don't want to do.
-	 */
-
-	TIME_NOW(&now);
-	result = isc_time_add(&now, &timer->interval, &timer->idle);
-
-	UNLOCK(&timer->lock);
-
-	return (result);
-}
-
 void
 isc_timer_attach(isc_timer_t *timer, isc_timer_t **timerp) {
 	REQUIRE(VALID_TIMER(timer));