diff --git a/homeassistant/components/mqtt/strings.json b/homeassistant/components/mqtt/strings.json
index 40215b0f2c6..0e248cfd2d2 100644
--- a/homeassistant/components/mqtt/strings.json
+++ b/homeassistant/components/mqtt/strings.json
@@ -1104,6 +1104,7 @@
     },
     "device_class_sensor": {
       "options": {
+        "absolute_humidity": "[%key:component::sensor::entity_component::absolute_humidity::name%]",
         "apparent_power": "[%key:component::sensor::entity_component::apparent_power::name%]",
         "area": "[%key:component::sensor::entity_component::area::name%]",
         "aqi": "[%key:component::sensor::entity_component::aqi::name%]",