--- man/Makefile.in.orig	2018-02-13 11:54:07.989470517 +0100
+++ man/Makefile.in	2018-02-13 11:56:07.907475868 +0100
@@ -209,7 +209,7 @@
 target_alias = @target_alias@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
-manualdir = $(datadir)/man/man1
+manualdir = $(prefix)/man/man1
 manual_DATA = cairo-clock.1.gz
 EXTRA_DIST = $(manual_DATA)
 all: all-am