diff --git a/src/modules/clock.cpp b/src/modules/clock.cpp
index f829d94b..b8c7387a 100644
--- a/src/modules/clock.cpp
+++ b/src/modules/clock.cpp
@@ -14,6 +14,7 @@ using waybar::modules::waybar_time;
 waybar::modules::Clock::Clock(const std::string& id, const Json::Value& config)
     : ALabel(config, "clock", id, "{:%H:%M}", 60), fixed_time_zone_(false) {
   if (config_["timezone"].isString()) {
+    spdlog::warn("As using a timezone, some format args may be missing as the date library havn't got a release since 2018.");
     time_zone_ = date::locate_zone(config_["timezone"].asString());
     fixed_time_zone_ = true;
   }