diff --git a/src/block/utils/Ageable.php b/src/block/utils/Ageable.php
index 31fe3f459..180392ef3 100644
--- a/src/block/utils/Ageable.php
+++ b/src/block/utils/Ageable.php
@@ -27,7 +27,10 @@ interface Ageable{
 
 	public function getAge() : int;
 
+	public function getMaxAge() : int;
+
 	/**
+	 * Must be in range 0 - getMaxAge()
 	 * @return $this
 	 */
 	public function setAge(int $age) : self;
diff --git a/src/block/utils/AgeableTrait.php b/src/block/utils/AgeableTrait.php
index dc1369c87..7a83ad66e 100644
--- a/src/block/utils/AgeableTrait.php
+++ b/src/block/utils/AgeableTrait.php
@@ -38,6 +38,8 @@ trait AgeableTrait{
 
 	public function getAge() : int{ return $this->age; }
 
+	public function getMaxAge() : int{ return self::MAX_AGE; }
+
 	/**
 	 * @return $this
 	 */