diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index 5f8fe3e..e75c48d 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -933,8 +933,6 @@
 	if (params->nulls_base && params->nulls_base < (1U << RHT_BASE_SHIFT))
 		return -EINVAL;
 
-	params->min_size = max(params->min_size, HASH_MIN_SIZE);
-
 	if (params->nelem_hint)
 		size = rounded_hashtable_size(params);
 
@@ -942,6 +940,14 @@
 	mutex_init(&ht->mutex);
 	memcpy(&ht->p, params, sizeof(*params));
 
+	if (params->min_size)
+		ht->p.min_size = roundup_pow_of_two(params->min_size);
+
+	if (params->max_size)
+		ht->p.max_size = rounddown_pow_of_two(params->max_size);
+
+	ht->p.min_size = max(params->min_size, HASH_MIN_SIZE);
+
 	if (params->locks_mul)
 		ht->p.locks_mul = roundup_pow_of_two(params->locks_mul);
 	else