diff --git a/homeassistant/components/ecoforest/strings.json b/homeassistant/components/ecoforest/strings.json
index d1767be5cda..1094e10ada3 100644
--- a/homeassistant/components/ecoforest/strings.json
+++ b/homeassistant/components/ecoforest/strings.json
@@ -6,6 +6,9 @@
           "host": "[%key:common::config_flow::data::host%]",
           "username": "[%key:common::config_flow::data::username%]",
           "password": "[%key:common::config_flow::data::password%]"
+        },
+        "data_description": {
+          "host": "The hostname or IP address of your Ecoforest device."
         }
       }
     },
diff --git a/homeassistant/components/elgato/strings.json b/homeassistant/components/elgato/strings.json
index e6b16215793..6e1031c8ddf 100644
--- a/homeassistant/components/elgato/strings.json
+++ b/homeassistant/components/elgato/strings.json
@@ -7,6 +7,9 @@
         "data": {
           "host": "[%key:common::config_flow::data::host%]",
           "port": "[%key:common::config_flow::data::port%]"
+        },
+        "data_description": {
+          "host": "The hostname or IP address of your Elgato device."
         }
       },
       "zeroconf_confirm": {
diff --git a/homeassistant/components/emonitor/strings.json b/homeassistant/components/emonitor/strings.json
index 675db107935..08ffe030890 100644
--- a/homeassistant/components/emonitor/strings.json
+++ b/homeassistant/components/emonitor/strings.json
@@ -5,6 +5,9 @@
       "user": {
         "data": {
           "host": "[%key:common::config_flow::data::host%]"
+        },
+        "data_description": {
+          "host": "The hostname or IP address of your SiteSage Emonitor device."
         }
       },
       "confirm": {