diff --git a/Dockerfile b/Dockerfile
index bda5a42998d63d331459a1fe4e223aec2e51fa9f..632b62fd1ed25c34121862d718e980f9328f1eb0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,8 +36,7 @@ ENV RUBY_MAJOR=2 \
 
 ENV HOME=/opt/app-root/src
 ENV GEM_HOME /usr/local/bundle
-ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
-	BUNDLE_APP_CONFIG="$GEM_HOME"
+ENV BUNDLE_SILENCE_ROOT_WARNING=1
 ENV PATH $HOME/bin:$GEM_HOME/bin:$PATH
 
 RUN mkdir -p "$GEM_HOME" && \