diff -ur shadow-4.8.orig/src/Makefile.am shadow-4.8/src/Makefile.am
--- shadow-4.8.orig/src/Makefile.am	2019-12-01 17:52:32.000000000 +0100
+++ shadow-4.8/src/Makefile.am	2019-12-16 00:05:04.509000000 +0100
@@ -2,8 +2,8 @@
 EXTRA_DIST = \
 	.indent.pro
 
-ubindir = ${bindir}
-usbindir = ${sbindir}
+ubindir = ${prefix}/bin
+usbindir = ${prefix}/sbin
 suidperms = 4755
 sgidperms = 2755
 
diff -ur shadow-4.8.orig/src/Makefile.in shadow-4.8/src/Makefile.in
--- shadow-4.8.orig/src/Makefile.in	2019-12-01 18:45:15.000000000 +0100
+++ shadow-4.8/src/Makefile.in	2019-12-16 00:05:54.438000000 +0100
@@ -555,8 +555,8 @@
 EXTRA_DIST = \
 	.indent.pro
 
-ubindir = ${bindir}
-usbindir = ${sbindir}
+ubindir = ${prefix}/bin
+usbindir = ${prefix}/sbin
 suidperms = 4755
 sgidperms = 2755
 AM_CPPFLAGS = \