diff --git a/pica-dokuwiki/Dockerfile b/pica-dokuwiki/Dockerfile
index 2370341edf59986e3855e01c25ddf52295bb5d5c..dc7989b28910f600335709ca639052d3d15e0989 100644
--- a/pica-dokuwiki/Dockerfile
+++ b/pica-dokuwiki/Dockerfile
@@ -13,7 +13,8 @@ RUN apt-get update -y && \
         php7.0-fpm \
         php7.0-gd \
         php7.0-xml \
-	libidn2-0 && \
+	    libidn2-0 && \
+    apt-get remove -y libidn11 && \
     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 && \