diff --git a/drivers/char/random.c b/drivers/char/random.c
index e3dd1dd3dd22..a1af90bacc9f 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1174,7 +1174,7 @@ static void __cold entropy_timer(struct timer_list *timer)
  */
 static void __cold try_to_generate_entropy(void)
 {
-	enum { NUM_TRIAL_SAMPLES = 8192, MAX_SAMPLES_PER_BIT = 32 };
+	enum { NUM_TRIAL_SAMPLES = 8192, MAX_SAMPLES_PER_BIT = HZ / 30 };
 	struct entropy_timer_state stack;
 	unsigned int i, num_different = 0;
 	unsigned long last = random_get_entropy();