diff --git a/pica-dokuwiki/Dockerfile b/pica-dokuwiki/Dockerfile
index 57cfc07751f8606b78b7bdf904e017f51648dd52..30b3130898de847ede0e15c13c55c7ec73221ff9 100644
--- a/pica-dokuwiki/Dockerfile
+++ b/pica-dokuwiki/Dockerfile
@@ -11,7 +11,7 @@ RUN apt-get update -y && \
         php7.0-gd \
         php7.0-xml \
         libidn2-0 && \
-    apt-get remove -y libidn && \
+    apt-get remove -y libidn11 && \
     mkdir -p html && \
     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 && \