diff --git a/docker/Dockerfile.s3tests b/docker/Dockerfile.s3tests
index e55ebadf9..4b7ea8d92 100644
--- a/docker/Dockerfile.s3tests
+++ b/docker/Dockerfile.s3tests
@@ -28,4 +28,4 @@ ENV \
     S3TEST_CONF="/s3test.conf"
 
 ENTRYPOINT ["/bin/bash", "-c"]
-CMD ["sleep 30 && exec ./virtualenv/bin/nosetests ${NOSETESTS_OPTIONS-} ${NOSETESTS_ATTR:+-a $NOSETESTS_ATTR} ${NOSETESTS_EXCLUDE:+-e $NOSETESTS_EXCLUDE}"]
\ No newline at end of file
+CMD ["sleep 30 && exec ./virtualenv/bin/nosetests ${NOSETESTS_OPTIONS-} ${NOSETESTS_ATTR:+-a $NOSETESTS_ATTR} ${NOSETESTS_EXCLUDE:+-e $NOSETESTS_EXCLUDE}"]