diff --git a/LICENSE b/LICENSE
index c7ef4dbe6a2..17cffb869ff 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1037,7 +1037,7 @@ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-include/nuttx/tree.h
+include/sys/tree.h
 ====================
 
 Copyright 2002 Niels Provos <provos@citi.umich.edu>
diff --git a/include/nuttx/tree.h b/include/sys/tree.h
similarity index 99%
rename from include/nuttx/tree.h
rename to include/sys/tree.h
index 44bb2e0a166..5cf0bac4a75 100644
--- a/include/nuttx/tree.h
+++ b/include/sys/tree.h
@@ -1,5 +1,5 @@
 /****************************************************************************
- * include/nuttx/tree.h
+ * include/sys/tree.h
  *
  * Copyright 2002 Niels Provos <provos@citi.umich.edu>
  * All rights reserved.
@@ -56,8 +56,8 @@
  * Included Files
  ****************************************************************************/
 
-#ifndef __INCLUDE_NUTTX_TREE_H
-#define __INCLUDE_NUTTX_TREE_H
+#ifndef __INCLUDE_SYS_TREE_H
+#define __INCLUDE_SYS_TREE_H
 
 /****************************************************************************
  * Pre-processor Definitions
@@ -1055,4 +1055,4 @@ while (0)
       ((x) != NULL) && ((y) = name##_RB_PREV(x), 1); \
        (x) = (y))
 
-#endif    /* __INCLUDE_NUTTX_TREE_H */
+#endif    /* __INCLUDE_SYS_TREE_H */