diff --git a/doc/xml/user-guide.xml b/doc/xml/user-guide.xml
index 49ecc882e..19432dcc8 100644
--- a/doc/xml/user-guide.xml
+++ b/doc/xml/user-guide.xml
@@ -264,7 +264,7 @@
 
         # Install base packages
         RUN apt-get update && \
-            apt-get install -y sudo ssh wget vim gnupg lsb-release iputils-ping ca-certificates 2>&1
+            apt-get install -y sudo ssh wget vim gnupg lsb-release iputils-ping ca-certificates locales 2>&1
 
         # Install CA certificate
         RUN update-ca-certificates
@@ -287,6 +287,12 @@
         RUN adduser --disabled-password --gecos "" {[host-user]} && \
             echo '%{[host-user]} ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers
 
+        # Set UTF8 encoding
+        RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
+            dpkg-reconfigure --frontend=noninteractive locales && \
+            update-locale LANG=en_US.UTF-8
+        ENV LANG en_US.UTF-8
+
         RUN {[minio-client-install]}
 
         ENTRYPOINT service ssh restart && bash