diff --git a/scripts/lib/install b/scripts/lib/install
index 0ff0985d06..f40bf676ce 100755
--- a/scripts/lib/install
+++ b/scripts/lib/install
@@ -21,6 +21,9 @@ echo -e "[machine]\npuppet_classes = zulip::voyager\ndeploy_type = voyager" > /e
 # These server restarting bits should be moveable into puppet-land, ideally
 apt-get -y upgrade
 if [ -e "/etc/init.d/nginx" ]; then
+    # Check nginx was configured properly now that we've installed it.
+    # Most common failure mode is certs not having been installed.
+    nginx -t
     service nginx restart
 fi