diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index ff90f04..04ac3a9 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -30,7 +30,7 @@
 	return 0;
 }
 
-static void __user *futex_uaddr(struct robust_list *entry,
+static void __user *futex_uaddr(struct robust_list __user *entry,
 				compat_long_t futex_offset)
 {
 	compat_uptr_t base = ptr_to_compat(entry);