--- a/plugins/mod_posix.lua	Fri Apr 21 16:42:25 2017 +0100
+++ b/plugins/mod_posix.lua	Sat Apr 22 16:41:44 2017 +0200
@@ -57,7 +57,7 @@
 if not prosody.start_time then -- server-starting
 	local suid = module:get_option("setuid");
 	if not suid or suid == 0 or suid == "root" then
-		if pposix.getuid() == 0 and not module:get_option("run_as_root") then
+		if pposix.getuid() == 0 and not module:get_option_boolean("run_as_root") then
 			module:log("error", "Danger, Will Robinson! Prosody doesn't need to be run as root, so don't do it!");
 			module:log("error", "For more information on running Prosody as root, see http://prosody.im/doc/root");
 			prosody.shutdown("Refusing to run as root");