diff --git a/phantomjs/Dockerfile b/phantomjs/Dockerfile
index 95114cd..f79b352 100644
--- a/phantomjs/Dockerfile
+++ b/phantomjs/Dockerfile
@@ -12,4 +12,4 @@ RUN apt-get update \
     && git clone git://github.com/ariya/phantomjs.git \
     && cd phantomjs \
     && git checkout 2.0 \
-    && ./build.sh <<<y
+    && ./build.sh <<< y