diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c
index f9c9e5a6bebaacba7b3eae6ade67dc243e2da5eb..47ff9b7f3e5d39d8a05e088b1308568836d4e332 100644
--- a/arch/um/kernel/trap.c
+++ b/arch/um/kernel/trap.c
@@ -7,6 +7,7 @@
 #include <linux/sched.h>
 #include <linux/hardirq.h>
 #include <linux/module.h>
+#include <linux/uaccess.h>
 #include <asm/current.h>
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>