diff --git a/README.rst b/README.rst
index c3e9800..73a1407 100644
--- a/README.rst
+++ b/README.rst
@@ -50,13 +50,13 @@ Now let's extract and format a bunch of data all at once::
 
     >>> pdf = pdfquery.PDFQuery("tests/samples/IRS_1040A.pdf")
     >>> pdf.extract( [
-         ('with_parent','LTPage[pageid=1]'),
+         ('with_parent', 'LTPage[pageid="1"]'),
          ('with_formatter', 'text'),
 
          ('last_name', 'LTTextLineHorizontal:in_bbox("315,680,395,700")'),
          ('spouse', 'LTTextLineHorizontal:in_bbox("170,650,220,680")'),
 
-         ('with_parent','LTPage[pageid=2]'),
+         ('with_parent', 'LTPage[pageid="2"]'),
 
          ('oath', 'LTTextLineHorizontal:contains("perjury")', lambda match: match.text()[:30]+"..."),
          ('year', 'LTTextLineHorizontal:contains("Form 1040A (")', lambda match: int(match.text()[-5:-1]))