diff --git a/lib/index.coffee b/lib/index.coffee
index 173e1ea..5910602 100644
--- a/lib/index.coffee
+++ b/lib/index.coffee
@@ -81,10 +81,10 @@ preprocessAST = (ast) ->
   i = 0
   out = []
   orderedList = false
-  orderedListItemNumber = 0
   while i < ast.length
     currentToken = ast[i]
     if currentToken.type is 'list_start'
+      orderedListItemNumber = 0
       # this is actually all we need the list start token for
       orderedList = currentToken.ordered
     else if currentToken.type in nestingStartTokens
diff --git a/test/index.coffee b/test/index.coffee
index 9a7d7c2..2119e04 100644
--- a/test/index.coffee
+++ b/test/index.coffee
@@ -187,6 +187,26 @@ describe 'lists', ->
       - last item
     ''')
 
+  it 'should normalize ordered lists', ->
+    tidyMdSnippet('''
+      # H1 header
+      1. blah
+      2. blah
+      3. blah
+
+      # another H1  header
+      1. blah
+      2. blah
+    ''').should.equal('''
+      # H1 header
+      1. blah
+      2. blah
+      3. blah
+
+      # another H1  header
+      1. blah
+      2. blah
+    ''')
 
 describe 'inline grammar', ->
   it 'should handle special characters', ->