diff --git a/Makefile b/Makefile
index fcfd998979..bc1d494aa8 100644
--- a/Makefile
+++ b/Makefile
@@ -238,6 +238,8 @@ inplace-install-l:
 	@echo "        sudo make inplace-postinstall-apache"
 	@echo "    - Configure nginx"
 	@echo "        sudo make inplace-postinstall-nginx"
+	@echo "    - Configure judgedaemon
+	@echo "        sudo make inplace-postinstall-judgedaemon"
 	@echo "    - Set up database"
 	@echo "        ./sql/dj_setup_database -u root [-r|-p ROOT_PASS] install"
 	@echo ""
@@ -291,6 +293,11 @@ inplace-postinstall-nginx: inplace-postinstall-permissions
 	systemctl restart nginx
 	systemctl restart php$(PHPVERSION)-fpm
 
+inplace-postinstall-judgedaemon:
+	cp $(CURDIR)/etc/sudoers-domjudge /etc/sudoers.d/domjudge
+	chown root:root /etc/sudoers.d/domjudge
+	chmod 0600 /etc/sudoers.d/domjudge
+
 # Removes created symlinks; generated logs, submissions, etc. remain in output subdir.
 inplace-uninstall-l:
 	rm -rf $(judgehost_libjudgedir)
diff --git a/webapp/templates/jury/submission.html.twig b/webapp/templates/jury/submission.html.twig
index 7da1dda839..2ea923714a 100644
--- a/webapp/templates/jury/submission.html.twig
+++ b/webapp/templates/jury/submission.html.twig
@@ -727,7 +727,7 @@
                             show complete metadata
                         </button>
                         {% if runsOutput[runIdx].metadata is not null %}
-                            {% if runsOutput[runIdx].output_limit %}
+                            {% if runsOutput[runIdx].output_limit is defined %}
                                 <div class="alert alert-warning">
                                     The submission output (<code>{{ runsOutput[runIdx].output_limit }}</code>) was
                                     truncated because of the configured output limit.