--- a/src/reportlab/pdfbase/pdfpattern.py	Wed Jan 20 14:45:53 2010 +0000
+++ b/src/reportlab/pdfbase/pdfpattern.py	Fri Jan 22 11:20:45 2010 +0000
@@ -5,6 +5,7 @@
 import string
 
 class PDFPattern:
+    __PDFObject__ = True
     __RefOnly__ = 1
     def __init__(self, pattern_sequence, **keywordargs):
         """