diff -urNad bisonc++.orig/bisonc++-4.09.02/debian/rules bisonc++/bisonc++-4.09.02/debian/rules
--- bisonc++.orig/bisonc++-4.09.02/debian/rules	2015-02-07 10:59:55.490742792 +0000
+++ bisonc++/bisonc++-4.09.02/debian/rules	2015-02-07 11:38:26.436529801 +0000
@@ -67,7 +67,7 @@
 	# Add here commands to install the package into debian/bisonc++.
 	./build install program debian/bisonc++/usr/bin/bisonc++
 	./build install skel    debian/bisonc++/usr/share/bisonc++
-	./build install man     debian/bisonc++/usr/share/man/man1
+	GZIP=-9n ./build install man     debian/bisonc++/usr/share/man/man1
 	./build install std     debian/bisonc++/usr/share/doc/bisonc++
 
 install-indep: