--- a/contrib/pdfmark/pdfmark.tmac	2010-12-23 21:24:53.000000000 +0000
+++ b/contrib/pdfmark/pdfmark.tmac	2012-06-11 11:49:35.000000000 +0100
@@ -110,7 +110,7 @@
 .   \"
 .   \" This PDFMARK is suitable for single chunk output ...
 .   \"
-.      nop \X'ps:exec [\\$* pdfmark'\c
+.      nop \!x X ps:exec [\\$* pdfmark
 .      \}
 .   el \{\
 .   \" ... but, when the limit would be violated, then we must