diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c
index 414a3fa45ab7..f8054e3a4bc9 100644
--- a/sys/amd64/amd64/machdep.c
+++ b/sys/amd64/amd64/machdep.c
@@ -65,6 +65,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/linker.h>
 #include <sys/lock.h>
 #include <sys/malloc.h>
+#include <sys/memrange.h>
 #include <sys/mutex.h>
 #include <sys/pcpu.h>
 #include <sys/proc.h>
@@ -164,6 +165,8 @@ struct pcpu __pcpu[MAXCPU];
 
 struct mtx icu_lock;
 
+struct mem_range_softc mem_range_softc;
+
 static void
 cpu_startup(dummy)
 	void *dummy;