--- a/plugins/mod_csi_simple.lua	Sun Jul 16 21:04:42 2023 +0200
+++ b/plugins/mod_csi_simple.lua	Sun Jul 16 20:49:33 2023 +0200
@@ -13,7 +13,7 @@
 local timer = require "prosody.util.timer";
 
 local queue_size = module:get_option_number("csi_queue_size", 256);
-local resume_delay = module:get_option_number("csi_resume_inactive_delay", 5);
+local resume_delay = module:get_option_period("csi_resume_inactive_delay", 5);
 
 local important_payloads = module:get_option_set("csi_important_payloads", { });