Index: kernel/generic/include/mm/as.h
===================================================================
--- kernel/generic/include/mm/as.h	(revision a1b9f63c506357f379bb6f1d9f633d5a740e941c)
+++ kernel/generic/include/mm/as.h	(revision d2c91abd4b109375f45c1205641991d346b2de18)
@@ -48,4 +48,5 @@
 #include <lib/elf.h>
 #include <arch.h>
+#include <lib/refcount.h>
 
 #define AS                   THE->as
@@ -111,5 +112,5 @@
 
 	/** Number of references (i.e. tasks that reference this as). */
-	atomic_t refcount;
+	atomic_refcount_t refcount;
 
 	mutex_t lock;