diff --git a/system/libs/pot/OTS_Account.php b/system/libs/pot/OTS_Account.php
index f617bbfc..8505128e 100644
--- a/system/libs/pot/OTS_Account.php
+++ b/system/libs/pot/OTS_Account.php
@@ -472,7 +472,7 @@ class OTS_Account extends OTS_Row_DAO implements IteratorAggregate, Countable
 		return $this->data['lastday'];
 	}
 
-	public function isPremium()
+	public function isPremium(): bool
 	{
 		if(isset($this->data['premium_ends_at']) || isset($this->data['premend']) ||
 			(isCanary() && isset($this->data['lastday']))) {
diff --git a/system/src/Models/Account.php b/system/src/Models/Account.php
index 26a09f51..4b44b153 100644
--- a/system/src/Models/Account.php
+++ b/system/src/Models/Account.php
@@ -56,7 +56,7 @@ class Account extends Model {
 		return max($ret, 0);
 	}
 
-	public function getIsPremiumAttribute()
+	public function getIsPremiumAttribute(): bool
 	{
 		if(isset($this->premium_ends_at) || isset($this->premend) ||
 			(isCanary() && isset($this->lastday))) {