diff --git a/drivers/char/random.c b/drivers/char/random.c
index 84212ed5d091e9db49470c0b36afce839752ac36..47ac7cd20fb193647591e62f2a61994f7d385463 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -415,7 +415,7 @@ struct crng_state {
 	spinlock_t	lock;
 };
 
-struct crng_state primary_crng = {
+static struct crng_state primary_crng = {
 	.lock = __SPIN_LOCK_UNLOCKED(primary_crng.lock),
 };