diff --git a/t/t5530-upload-pack-error.sh b/t/t5530-upload-pack-error.sh
index 3932e797f7f..4f6e32b04c4 100755
--- a/t/t5530-upload-pack-error.sh
+++ b/t/t5530-upload-pack-error.sh
@@ -4,7 +4,7 @@ test_description='errors in upload-pack'
 
 . ./test-lib.sh
 
-D=`pwd`
+D=$(pwd)
 
 corrupt_repo () {
 	object_sha1=$(git rev-parse "$1") &&