--- netsniff-ng/src/Makefile.orig
+++ netsniff-ng/src/Makefile
@@ -39,9 +39,9 @@
 	@install -D $(target) $(DESTDIR)/$(BINDIR)/$(target)
 	@install -d $(DESTDIR)/$(ETCDIR)/$(target)/rules
 	@cp -r rules/*.bpf $(DESTDIR)/$(ETCDIR)/$(target)/rules/
-	@cat $(MANDIR_LOCAL)/$(target).8 | gzip --best > \
+	@cat $(MANDIR_LOCAL)/$(target).8 | gzip > \
 	$(MANDIR_LOCAL)/$(target).8.gz
-	@install -D $(MANDIR_LOCAL)/$(target).8.gz \
+	@install -Dm644 $(MANDIR_LOCAL)/$(target).8.gz \
 	$(DESTDIR)/$(MANDIR)/$(target).8.gz
 
 uninstall: