diff --git a/Doc/Makefile b/Doc/Makefile
index db88c2c..c2ceb7c 100644
--- a/Doc/Makefile
+++ b/Doc/Makefile
@@ -310,7 +310,11 @@
 zippdf:		pdf-$(PAPER)-$(RELEASE).zip
 ziplatex:	latex-$(RELEASE).zip
 
-zips:		zippdf zipps ziphtml ziplonghtml
+# Only build the longhtml version for final releases; use the second
+# version of this for pre-release versions.
+#
+#zips:		zippdf zipps ziphtml ziplonghtml
+zips:		zippdf zipps ziphtml
 
 bziphtml:	html-$(RELEASE).tar.bz2
 bzipinfo:	info-$(RELEASE).tar.bz2