diff --git a/contrib/examples/git-repack.sh b/contrib/examples/git-repack.sh
index 757933174e..f312405a25 100755
--- a/contrib/examples/git-repack.sh
+++ b/contrib/examples/git-repack.sh
@@ -49,7 +49,7 @@ do
 	shift
 done
 
-case "`git config --bool repack.usedeltabaseoffset || echo true`" in
+case "$(git config --bool repack.usedeltabaseoffset || echo true)" in
 true)
 	extra="$extra --delta-base-offset" ;;
 esac