diff --git a/lib/redcarpet_header_fix.rb b/lib/redcarpet_header_fix.rb
index 170d4b8..749607e 100644
--- a/lib/redcarpet_header_fix.rb
+++ b/lib/redcarpet_header_fix.rb
@@ -1,7 +1,7 @@
 module RedcarpetHeaderFix
   def header(text, level, id)
     clean_id = id.gsub(/[\.]/, '-').gsub(/[^a-zA-Z0-9\-_]/, '')
-    "<h#{level} id='#{clean_id}'>#{text}</h1>"
+    "<h#{level} id='#{clean_id}'>#{text}</h#{level}>"
   end
 end