Index: tree.h
===================================================================
RCS file: /cvs/src/sys/sys/tree.h,v
retrieving revision 1.18
diff -u -p -r1.18 tree.h
--- tree.h	6 Sep 2016 06:56:30 -0000	1.18
+++ tree.h	9 Sep 2016 01:07:37 -0000
@@ -786,7 +786,7 @@ struct _name {								\
 
 #define RBT_ENTRY(_type)	struct rb_entry
 
-#ifdef _KERNEL
+#ifdef _LOCORE
 #include <sys/param.h> /* for NULL */
 
 static inline void
@@ -965,6 +965,6 @@ RBT_GENERATE_INTERNAL(_name, _type, _fie
 	     (_e) != NULL && ((_n) = RBT_PREV(_name, (_e)), 1);	\
 	     (_e) = (_n))
 
-#endif /* _KERNEL */
+#endif /* _LOCORE */
 
 #endif	/* _SYS_TREE_H_ */