diff --git a/doc/src/sgml/Makefile b/doc/src/sgml/Makefile
index 666e798109ca6e7ea092954e4cfaa55b63ea6bfe..4850456e521cd194c7ce96bf6cba9b75e759d288 100644
--- a/doc/src/sgml/Makefile
+++ b/doc/src/sgml/Makefile
@@ -2,7 +2,7 @@
 #
 # PostgreSQL documentation makefile
 #
-# $PostgreSQL: pgsql/doc/src/sgml/Makefile,v 1.96 2007/02/09 20:40:13 neilc Exp $
+# $PostgreSQL: pgsql/doc/src/sgml/Makefile,v 1.97 2007/05/18 15:55:03 petere Exp $
 #
 #----------------------------------------------------------------------------
 
@@ -11,6 +11,7 @@ top_builddir = ../../..
 include $(top_builddir)/src/Makefile.global
 
 .NOTPARALLEL:
+.PRECIOUS: %-A4.tex-ps %-US.tex-ps %-A4.tex-pdf %-US.tex-pdf
 
 ifndef COLLATEINDEX
 COLLATEINDEX = $(DOCBOOKSTYLE)/bin/collateindex.pl