diff --git a/src/freedombone-app-radicale b/src/freedombone-app-radicale
index 93b28f47..572c7edb 100755
--- a/src/freedombone-app-radicale
+++ b/src/freedombone-app-radicale
@@ -338,6 +338,7 @@ function install_radicale {
         mkdir -p /var/www/radicale/collections
     fi
     chown -R www-data:www-data /var/www/radicale
+    chmod -R 755 /var/www/radicale/collections
 
     # create the configuration
     echo '[server]' >  ${RADICALE_DIRECTORY}/config