diff --git a/Dockerfile.xos-gui-builder b/Dockerfile.xos-gui-builder
index 32508ca..b5c9661 100644
--- a/Dockerfile.xos-gui-builder
+++ b/Dockerfile.xos-gui-builder
@@ -14,7 +14,7 @@
 # limitations under the License.
 
 
-# To build use: docker build -t xosproject/xos-gui-builder:candidate .
+# docker build -f Dockerfile.xos-gui-builder -t xosproject/xos-gui-builder:candidate .
 
 FROM node:7.9.0