diff --git a/src/devices/thermostat.cpp b/src/devices/thermostat.cpp
index 8e38e2df4..478c0c49a 100644
--- a/src/devices/thermostat.cpp
+++ b/src/devices/thermostat.cpp
@@ -118,8 +118,8 @@ Thermostat::Thermostat(uint8_t device_type, uint8_t device_id, uint8_t product_i
             register_telegram_type(set_typeids[i], F("RC300Set"), false, [&](std::shared_ptr<const Telegram> t) { process_RC300Set(t); });
             register_telegram_type(summer_typeids[i], F("RC300Summer"), false, [&](std::shared_ptr<const Telegram> t) { process_RC300Summer(t); });
         }
-        register_telegram_type(0x2F5, F("RC300WWmode"), false, [&](std::shared_ptr<const Telegram> t) { process_RC300WWmode(t); });
-        register_telegram_type(0x31B, F("RC300WWtemp"), false, [&](std::shared_ptr<const Telegram> t) { process_RC300WWtemp(t); });
+        register_telegram_type(0x2F5, F("RC300WWmode"), true, [&](std::shared_ptr<const Telegram> t) { process_RC300WWmode(t); });
+        register_telegram_type(0x31B, F("RC300WWtemp"), true, [&](std::shared_ptr<const Telegram> t) { process_RC300WWtemp(t); });
         register_telegram_type(0x31D, F("RC300WWmode2"), false, [&](std::shared_ptr<const Telegram> t) { process_RC300WWmode2(t); });
         register_telegram_type(0x31E, F("RC300WWmode2"), false, [&](std::shared_ptr<const Telegram> t) { process_RC300WWmode2(t); });