diff --git a/pica-dokuwiki/Dockerfile b/pica-dokuwiki/Dockerfile
index 903c9cc3176f3bd76944169c8ae5a30807864608..7eb79ba4cbbaddfbd3756fc1c8671f289f8afc1c 100644
--- a/pica-dokuwiki/Dockerfile
+++ b/pica-dokuwiki/Dockerfile
@@ -27,7 +27,7 @@ RUN apt-get update -y && \
     chown -R www-data . && \
     chmod +x /run.sh && \
     sed -i "s/\${MAXSIZE}/100M/g" /etc/nginx/nginx.conf && \
-    apt-get remove wget tar && \
+    apt-get remove -y wget && \
     apt-get clean
 
 EXPOSE 80