diff --git a/converter.rb b/converter.rb
index 587a6c2..e18db1a 100644
--- a/converter.rb
+++ b/converter.rb
@@ -18,7 +18,17 @@ module Jekyll
     def convert(content)
       dirname = "#{File.expand_path(File.dirname(__FILE__))}"
       RbST.executables = {:html => dirname + "/rst2html5.py"}
-      rst2htmlcontent = RbST.new(content).to_html(:initial_header_level => 2)
+      level = 2
+
+      conf = Jekyll.configuration({})
+      if conf.has_key?('rst')
+        level = conf['rst']['initial_header_level']
+        if not level.is_a?(Integer)
+          level = 2
+        end
+      end
+
+      rst2htmlcontent = RbST.new(content).to_html(:initial_header_level => level)
       document = Nokogiri::HTML(rst2htmlcontent)
       content = document.css('body').inner_html
     end