diff --git a/sqlalchemy_utils/primitives/ltree.py b/sqlalchemy_utils/primitives/ltree.py
index e330259..ddae116 100644
--- a/sqlalchemy_utils/primitives/ltree.py
+++ b/sqlalchemy_utils/primitives/ltree.py
@@ -22,7 +22,7 @@ class Ltree(object):
         Ltree('1.2.3').path  # '1.2.3'
 
 
-    Ltree always validates the given code.
+    Ltree always validates the given path.
 
     ::
 
@@ -31,6 +31,14 @@ class Ltree(object):
         Ltree('..')  # raises ValueError
 
 
+    Validator is also available as class method.
+
+    ::
+
+        Ltree.validate('1.2.3')
+        Ltree.validate(None)  # raises ValueError
+
+
     Ltree supports equality operators.
 
     ::