--- a/debian/update-info-dir
+++ b/debian/update-info-dir
@@ -4,7 +4,7 @@
 # Copyright 2009, 2014 Norbert Preining
 # GPLv2
 
-INFODIR=/usr/share/info
+INFODIR=@TERMUX_PREFIX@/share/info
 
 set -e
 
@@ -14,13 +14,7 @@
 # the dir file. Unset LANGUAGE and reload /etc/environment to get
 # the system wide settings. See bug #536476
 unset LANGUAGE
-unset LANG
-if [ -r /etc/environment ] ; then
-  . /etc/environment
-fi
-if [ -r /etc/default/locale ] ; then
-  . /etc/default/locale
-fi
+export LANG=C.UTF-8
 
 Help ()
 {
@@ -28,7 +22,7 @@
 SYNOPSIS: update-info-dir [-h,--help] [info-directory]
 
 (re-)creates the index of available documentation in info format
-(the file /usr/share/info/dir) which is usually presented by info browsers
+(the file @TERMUX_PREFIX@/share/info/dir) which is usually presented by info browsers
 on startup."
 
     exit 0