diff --git a/doc/Makefile b/doc/Makefile
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -22,8 +22,8 @@ LN_S = ln -s
 
 TXT_PDFS = $(patsubst %.txt,%.pdf,$(TXTS))
 TXT_HTMLS = $(patsubst %.txt,%.html,$(TXTS)) $(patsubst %.txt,%.html,$(HTML_TXTS))
-CLEANFILES += $(TXT_PDFS)
-CLEANFILES += $(TXT_HTMLS)
+#CLEANFILES += $(TXT_PDFS)
+#CLEANFILES += $(TXT_HTMLS)
 
 SNIPPETS = ../lib/snippets.pl