--- man/Makefile.in.orig	2016-12-29 08:56:34 UTC
+++ man/Makefile.in
@@ -25,7 +25,7 @@ clean:
 test:		
 
 install:
-		mkdir -p $(DESTDIR)$(mandir)/man8
+		mkdir -p $(DESTDIR)${PREFIX}/man/man8
 		for f in *.8; do \
-			install -m 644 $$f $(DESTDIR)$(mandir)/man8; \
+			install -m 644 $$f $(DESTDIR)${PREFIX}/man/man8; \
 		done