diff --git a/lib/Kconfig b/lib/Kconfig
index 61d55bd..d79909d 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -362,6 +362,9 @@
 
 	  for more information.
 
+config RADIX_TREE_MULTIORDER
+	bool
+
 config ASSOCIATIVE_ARRAY
 	bool
 	help