diff --git a/include/nuttx/clock.h b/include/nuttx/clock.h
index b11b1cfc693..7790f681008 100644
--- a/include/nuttx/clock.h
+++ b/include/nuttx/clock.h
@@ -394,6 +394,51 @@ void clock_resynchronize(FAR struct timespec *rtc_diff);
 clock_t clock_systime_ticks(void);
 #endif
 
+/****************************************************************************
+ * Name: clock_time2ticks
+ *
+ * Description:
+ *   Return the given struct timespec as systime ticks.
+ *
+ *   NOTE:  This is an internal OS interface and should not be called from
+ *   application code.
+ *
+ * Input Parameters:
+ *   reltime - Pointer to the time presented as struct timespec
+ *
+ * Output Parameters:
+ *   ticks - Pointer to receive the time value presented as systime ticks
+ *
+ * Returned Value:
+ *   Always returns OK (0)
+ *
+ ****************************************************************************/
+
+int clock_time2ticks(FAR const struct timespec *reltime,
+                     FAR sclock_t *ticks);
+
+/****************************************************************************
+ * Name: clock_ticks2time
+ *
+ * Description:
+ *   Return the given systime ticks as a struct timespec.
+ *
+ *   NOTE:  This is an internal OS interface and should not be called from
+ *   application code.
+ *
+ * Input Parameters:
+ *   ticks - Time presented as systime ticks
+ *
+ * Output Parameters:
+ *   reltime - Pointer to receive the time value presented as struct timespec
+ *
+ * Returned Value:
+ *   Always returns OK (0)
+ *
+ ****************************************************************************/
+
+int clock_ticks2time(sclock_t ticks, FAR struct timespec *reltime);
+
 /****************************************************************************
  * Name: clock_systime_timespec
  *
diff --git a/libs/libc/sched/Make.defs b/libs/libc/sched/Make.defs
index 690d871ec77..a136f4834e8 100644
--- a/libs/libc/sched/Make.defs
+++ b/libs/libc/sched/Make.defs
@@ -21,6 +21,8 @@
 # Add the sched C files to the build
 
 CSRCS += sched_getprioritymax.c sched_getprioritymin.c
+CSRCS += clock_ticks2time.c clock_time2ticks.c
+CSRCS += clock_timespec_add.c clock_timespec_subtract.c
 
 ifneq ($(CONFIG_CANCELLATION_POINTS),y)
 CSRCS += task_setcanceltype.c task_testcancel.c
diff --git a/sched/clock/clock_ticks2time.c b/libs/libc/sched/clock_ticks2time.c
similarity index 97%
rename from sched/clock/clock_ticks2time.c
rename to libs/libc/sched/clock_ticks2time.c
index 9cb08a87f0b..f2074bde16d 100644
--- a/sched/clock/clock_ticks2time.c
+++ b/libs/libc/sched/clock_ticks2time.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * sched/clock/clock_ticks2time.c
+ * libs/libc/sched/clock_ticks2time.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -25,7 +25,7 @@
 #include <nuttx/config.h>
 
 #include <time.h>
-#include "clock/clock.h"
+#include <nuttx/clock.h>
 
 /****************************************************************************
  * Public Functions
diff --git a/sched/clock/clock_time2ticks.c b/libs/libc/sched/clock_time2ticks.c
similarity index 98%
rename from sched/clock/clock_time2ticks.c
rename to libs/libc/sched/clock_time2ticks.c
index 72e5f7942aa..9bcf832846d 100644
--- a/sched/clock/clock_time2ticks.c
+++ b/libs/libc/sched/clock_time2ticks.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * sched/clock/clock_time2ticks.c
+ * libs/libc/sched/clock_time2ticks.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -28,7 +28,7 @@
 #include <time.h>
 #include <assert.h>
 
-#include "clock/clock.h"
+#include <nuttx/clock.h>
 
 /****************************************************************************
  * Public Functions
diff --git a/sched/clock/clock_timespec_add.c b/libs/libc/sched/clock_timespec_add.c
similarity index 97%
rename from sched/clock/clock_timespec_add.c
rename to libs/libc/sched/clock_timespec_add.c
index 17fa47f66d8..04d8234828b 100644
--- a/sched/clock/clock_timespec_add.c
+++ b/libs/libc/sched/clock_timespec_add.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * sched/clock/clock_timespec_add.c
+ * libs/libc/sched/clock_timespec_add.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -27,7 +27,7 @@
 #include <stdint.h>
 #include <time.h>
 
-#include "clock/clock.h"
+#include <nuttx/clock.h>
 
 /****************************************************************************
  * Public Functions
diff --git a/sched/clock/clock_timespec_subtract.c b/libs/libc/sched/clock_timespec_subtract.c
similarity index 97%
rename from sched/clock/clock_timespec_subtract.c
rename to libs/libc/sched/clock_timespec_subtract.c
index 04d378ef4fb..1cfd599903c 100644
--- a/sched/clock/clock_timespec_subtract.c
+++ b/libs/libc/sched/clock_timespec_subtract.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * sched/clock/clock_timespec_subtract.c
+ * libs/libc/sched/clock_timespec_subtract.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -27,7 +27,7 @@
 #include <stdint.h>
 #include <time.h>
 
-#include "clock/clock.h"
+#include <nuttx/clock.h>
 
 /****************************************************************************
  * Public Functions
diff --git a/sched/clock/Make.defs b/sched/clock/Make.defs
index 57a51b6b221..7ae14e7a015 100644
--- a/sched/clock/Make.defs
+++ b/sched/clock/Make.defs
@@ -19,9 +19,9 @@
 ############################################################################
 
 CSRCS += clock_initialize.c clock_settime.c clock_gettime.c clock_getres.c
-CSRCS += clock_time2ticks.c clock_abstime2ticks.c clock_ticks2time.c
-CSRCS += clock_systime_ticks.c clock_systime_timespec.c clock_timespec_add.c
-CSRCS += clock_timespec_subtract.c clock.c
+CSRCS += clock_abstime2ticks.c
+CSRCS += clock_systime_ticks.c clock_systime_timespec.c
+CSRCS += clock.c
 
 ifeq ($(CONFIG_CLOCK_TIMEKEEPING),y)
 CSRCS += clock_timekeeping.c
diff --git a/sched/clock/clock.h b/sched/clock/clock.h
index 874edc2a315..3f67f0fcc24 100644
--- a/sched/clock/clock.h
+++ b/sched/clock/clock.h
@@ -84,8 +84,5 @@ void weak_function clock_timer(void);
 int  clock_abstime2ticks(clockid_t clockid,
                          FAR const struct timespec *abstime,
                          FAR sclock_t *ticks);
-int  clock_time2ticks(FAR const struct timespec *reltime,
-                      FAR sclock_t *ticks);
-int  clock_ticks2time(sclock_t ticks, FAR struct timespec *reltime);
 
 #endif /* __SCHED_CLOCK_CLOCK_H */