diff --git a/components/engine/hack/make.sh b/components/engine/hack/make.sh
index 3bcb265b3c..b4312b5d57 100755
--- a/components/engine/hack/make.sh
+++ b/components/engine/hack/make.sh
@@ -27,7 +27,7 @@ export DOCKER_PKG='github.com/docker/docker'
 
 # We're a nice, sexy, little shell script, and people might try to run us;
 # but really, they shouldn't. We want to be in a container!
-if [ "$(pwd)" != "/go/src/$DOCKER_PKG" ] || [ -z "$DOCKER_CROSSPLATFORMS" ]; then
+if [ "$PWD" != "/go/src/$DOCKER_PKG" ] || [ -z "$DOCKER_CROSSPLATFORMS" ]; then
 	{
 		echo "# WARNING! I don't seem to be running in the Docker container."
 		echo "# The result of this command might be an incorrect build, and will not be"
@@ -82,7 +82,7 @@ if [ "$AUTO_GOPATH" ]; then
 	rm -rf .gopath
 	mkdir -p .gopath/src/"$(dirname "${DOCKER_PKG}")"
 	ln -sf ../../../.. .gopath/src/"${DOCKER_PKG}"
-	export GOPATH="$(pwd)/.gopath:$(pwd)/vendor"
+	export GOPATH="${PWD}/.gopath:${PWD}/vendor"
 fi
 
 if [ ! "$GOPATH" ]; then