diff --git a/build/drone/ubuntu_xenial.sh b/build/drone/ubuntu_xenial.sh
index a44234f52..f5695bc82 100755
--- a/build/drone/ubuntu_xenial.sh
+++ b/build/drone/ubuntu_xenial.sh
@@ -10,7 +10,7 @@ chmod +x /usr/local/bin/rubyc
 gem install bundler
 version=${DRONE_TAG#"v"}
 package="pharos-cluster-linux-amd64-${version}"
-mkdir /root/.pharos/build
+mkdir -p /root/.pharos/build
 rubyc -o $package -d /root/.pharos/build pharos-cluster
 ./$package version