diff --git a/version.sh b/version.sh
index f7418d30..27d16c05 100755
--- a/version.sh
+++ b/version.sh
@@ -3,5 +3,10 @@
 LC_ALL=C
 export LC_ALL
 
+srcdir="$(dirname "$0")"
+test -z "$srcdir" && srcdir=.
+
+cd "$srcdir"
+
 [ -f version ] || ( git describe --exact-match --tags $(git log -n1 --pretty='%h') 2>/dev/null || git log -n1 --pretty='%h' ) | sed 's/^v//g' | xargs printf '%s'
 [ -f version ] && ( cat version 2>/dev/null ) | xargs printf '%s'