diff --git a/Doc/tools/toc2bkm.py b/Doc/tools/toc2bkm.py
index 0d22fb1e2c2..ed78f36c37f 100755
--- a/Doc/tools/toc2bkm.py
+++ b/Doc/tools/toc2bkm.py
@@ -101,7 +101,7 @@ def write_toc(toc, fp):
 
 def write_toc_entry(entry, fp, layer):
     stype, snum, title, pageno, toc = entry
-    s = "\\pdfoutline goto name{page.%dx}" % pageno
+    s = "\\pdfoutline goto name{page%03d}" % pageno
     if toc:
 	s = "%s count -%d" % (s, len(toc))
     if snum: