1 files changed, 1 insertions, 1 deletions
diff --git a/lib/rss/2.0.rb b/lib/rss/2.0.rb
index 5793b35938..19cb487d79 100644
--- a/lib/rss/2.0.rb
+++ b/lib/rss/2.0.rb
@@ -11,7 +11,7 @@ module RSS
         install_model(x, '?')
       end
 
-      undef :ttl=
+      remove_method :ttl=
       def ttl=(value)
         @ttl = value.to_i
       end