diff --git a/xen/lib/list-sort.c b/xen/lib/list-sort.c
index f8d8bbf281..de1af2ef8b 100644
--- a/xen/lib/list-sort.c
+++ b/xen/lib/list-sort.c
@@ -16,6 +16,7 @@
  */
 
 #include <xen/list.h>
+#include <xen/list_sort.h>
 
 #define MAX_LIST_LENGTH_BITS 20