diff --git a/base/centos7-bundle:2021.03.01 b/base/centos7-bundle:2021.03.01
index 4bbae63c6ab7b89948f1a1a00a9054c6fc547075..104e9e45cac3349f2b6b34ed47931808c680db9d 100644
--- a/base/centos7-bundle:2021.03.01
+++ b/base/centos7-bundle:2021.03.01
@@ -1,6 +1,10 @@
 FROM docker.km3net.de/base/centos:7
  MAINTAINER Tamas Gal <tgal@km3net.de>
 
+ ENV LANG en_US.UTF-8  
+ ENV LANGUAGE en_US:en  
+ ENV LC_ALL en_US.UTF-8   
+
  RUN yum install -y centos-release-scl epel-release
  RUN yum install -y man sed cygpath grep test csh tar vim lftp zsh \
                     bzip2-devel gzip libproxy libgpg-error openssh-server \