diff --git a/lib/devise/models/lockable.rb b/lib/devise/models/lockable.rb
index 65bb400d0..6ab0ce747 100644
--- a/lib/devise/models/lockable.rb
+++ b/lib/devise/models/lockable.rb
@@ -84,7 +84,7 @@ def resend_unlock_instructions
         if_access_locked { send_unlock_instructions }
       end
 
-      # Overwrites active_for_authentication? from Devise::Models::Activatable for locking purposes
+      # Overwrites active_for_authentication? from Devise::Models::Authenticatable for locking purposes
       # by verifying whether a user is active to sign in or not based on locked?
       def active_for_authentication?
         super && !access_locked?