diff --git a/pica-dokuwiki/Dockerfile b/pica-dokuwiki/Dockerfile
index f8f6cb88257fd492dc820ee180744aa4848fa583..432af4c00b8f0be1e5c8fde93170b21f06515bc2 100644
--- a/pica-dokuwiki/Dockerfile
+++ b/pica-dokuwiki/Dockerfile
@@ -13,6 +13,7 @@ RUN apt-get update -y && \
         php7.0-fpm \
         php7.0-gd \
         php7.0-xml && \
+    apt-get remove libidn11 -y && \
     mkdir -p html /var/run/php && \
     echo "cgi.fix_pathinfo = 0;" >> /etc/php/7.0/fpm/php.ini && \
     sed -i -e "s|;daemonize\s*=\s*yes|daemonize = no|g" /etc/php/7.0/fpm/php-fpm.conf && \