diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 49fbbef..36efe08 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -103,7 +103,7 @@
 /*
  * Allocate an element from the rcu_tortures pool.
  */
-struct rcu_torture *
+static struct rcu_torture *
 rcu_torture_alloc(void)
 {
 	struct list_head *p;