diff --git a/lib/coderay/encoders/html/output.rb b/lib/coderay/encoders/html/output.rb
index de6f6ea1..ee87fea5 100644
--- a/lib/coderay/encoders/html/output.rb
+++ b/lib/coderay/encoders/html/output.rb
@@ -76,8 +76,6 @@ def wrap! element, *args
             apply_title! title
           end
           self
-        when nil
-          return self
         else
           raise "Unknown value %p for :wrap" % element
         end