Index: kernel/generic/src/mm/backend_phys.c
===================================================================
--- kernel/generic/src/mm/backend_phys.c	(revision 98000fb4ea6015506f059c9b121e417ce991ecfd)
+++ kernel/generic/src/mm/backend_phys.c	(revision 0cb2d725c51ac13d0cd117c5867eeec55b19cb44)
@@ -40,4 +40,5 @@
 #include <arch/types.h>
 #include <mm/as.h>
+#include <mm/page.h>
 #include <mm/frame.h>
 #include <mm/slab.h>