diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c
index acaebb63c4fd..ea6d4d6c02f6 100644
--- a/arch/sparc/kernel/mdesc.c
+++ b/arch/sparc/kernel/mdesc.c
@@ -16,6 +16,7 @@
 #include <asm/hypervisor.h>
 #include <asm/mdesc.h>
 #include <asm/prom.h>
+#include <asm/uaccess.h>
 #include <asm/oplib.h>
 #include <asm/smp.h>