diff --git a/backup.sh b/backup.sh
index 48d4d35..36a2362 100755
--- a/backup.sh
+++ b/backup.sh
@@ -82,7 +82,7 @@ cleanup () {
 }
 
 send_matrix () {
-	${CURL} -skd "{\"body\": \"$1\"}" http://192.168.0.101:4785/\?key\=$MATRIX_HOOK_KEY\&room_id\=$MATRIX_HOOK_ROOMID > /dev/null
+	${CURL} -skd "{\"body\": \"$1\"}" $MATRIX_HOOK_URL/\?key\=$MATRIX_HOOK_KEY\&room_id\=$MATRIX_HOOK_ROOMID > /dev/null
 }
 
 notify () {
diff --git a/etc/env b/etc/env
index b4df205..f956355 100644
--- a/etc/env
+++ b/etc/env
@@ -10,6 +10,8 @@ export RESTIC_REPOSITORY=
 export RESTIC_CACHE_DIR=
 
 ## matrix notifiction hook settings
+# base url for matrix hook
+export MATRIX_HOOK_URL=
 # api key
 export MATRIX_HOOK_KEY=
 # room_id, ensure it is in '', because the ! will mess things up