diff --git a/include/linux/sched.h b/include/linux/sched.h
index bd38b3ee9e83..699228bb0035 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1127,8 +1127,6 @@ struct sched_domain_topology_level {
 #endif
 };
 
-extern struct sched_domain_topology_level *sched_domain_topology;
-
 extern void set_sched_topology(struct sched_domain_topology_level *tl);
 extern void wake_up_if_idle(int cpu);
 
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 1b30b5b24a4a..a91df6171f48 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6445,7 +6445,8 @@ static struct sched_domain_topology_level default_topology[] = {
 	{ NULL, },
 };
 
-struct sched_domain_topology_level *sched_domain_topology = default_topology;
+static struct sched_domain_topology_level *sched_domain_topology =
+	default_topology;
 
 #define for_each_sd_topology(tl)			\
 	for (tl = sched_domain_topology; tl->mask; tl++)