diff --git a/Dockerfile b/Dockerfile
index 9b22204db2..a869f5bfd2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,5 +9,5 @@ RUN go get  github.com/golang/lint/golint \
 ENV USER root
 WORKDIR /go/src/github.com/docker/machine
 
-ADD . /go/src/github.com/docker/machine
+COPY . /go/src/github.com/docker/machine
 RUN mkdir bin