diff --git a/doc/Makefile b/doc/Makefile
index a19d2fb5..f61b7c5b 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -9,6 +9,9 @@ Contents.html: $(INPUTS)
 	$(HOME)/src/buttress/build/buttress $(INPUTS)
 	rm -f index.html
 	ln -s Contents.html index.html
+	mv output.txt puttydoc.txt
+	mv output.hlp putty.hlp
+	mv output.cnt putty.cnt
 
 clean:
-	rm -f *.html output.txt
+	rm -f *.html *.txt *.hlp *.cnt