diff --git a/homeassistant/components/enphase_envoy/strings.json b/homeassistant/components/enphase_envoy/strings.json
index 94cf9233745..fe32002e6b2 100644
--- a/homeassistant/components/enphase_envoy/strings.json
+++ b/homeassistant/components/enphase_envoy/strings.json
@@ -8,6 +8,9 @@
           "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 Enphase Envoy gateway."
         }
       }
     },
diff --git a/homeassistant/components/epson/strings.json b/homeassistant/components/epson/strings.json
index 4e3780322e9..94544c32d1d 100644
--- a/homeassistant/components/epson/strings.json
+++ b/homeassistant/components/epson/strings.json
@@ -5,6 +5,9 @@
         "data": {
           "host": "[%key:common::config_flow::data::host%]",
           "name": "[%key:common::config_flow::data::name%]"
+        },
+        "data_description": {
+          "host": "The hostname or IP address of your Epson projector."
         }
       }
     },
diff --git a/homeassistant/components/evil_genius_labs/strings.json b/homeassistant/components/evil_genius_labs/strings.json
index 790e9a69c7f..123d164444d 100644
--- a/homeassistant/components/evil_genius_labs/strings.json
+++ b/homeassistant/components/evil_genius_labs/strings.json
@@ -4,6 +4,9 @@
       "user": {
         "data": {
           "host": "[%key:common::config_flow::data::host%]"
+        },
+        "data_description": {
+          "host": "The hostname or IP address of your Evil Genius Labs device."
         }
       }
     },