diff --git a/sonoff/language/uk-UK.h b/sonoff/language/uk-UK.h
index fc32479fc..c6c0b9d2b 100644
--- a/sonoff/language/uk-UK.h
+++ b/sonoff/language/uk-UK.h
@@ -110,6 +110,7 @@
 #define D_IP_ADDRESS "IP Адрес"
 #define D_LIGHT "Світло"
 #define D_LWT "LWT"
+#define D_MMHG "mmHg"
 #define D_MODULE "Модуль"
 #define D_MQTT "MQTT"
 #define D_MULTI_PRESS "багаторазове натискання"