diff --git a/homeassistant/components/dremel_3d_printer/strings.json b/homeassistant/components/dremel_3d_printer/strings.json
index 0016b8f2bca..9f6870b57f6 100644
--- a/homeassistant/components/dremel_3d_printer/strings.json
+++ b/homeassistant/components/dremel_3d_printer/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 Dremel 3D printer."
         }
       }
     },
diff --git a/homeassistant/components/dunehd/strings.json b/homeassistant/components/dunehd/strings.json
index f7e12b39f16..7d60a720a98 100644
--- a/homeassistant/components/dunehd/strings.json
+++ b/homeassistant/components/dunehd/strings.json
@@ -5,6 +5,9 @@
         "description": "Ensure that your player is turned on.",
         "data": {
           "host": "[%key:common::config_flow::data::host%]"
+        },
+        "data_description": {
+          "host": "The hostname or IP address of your Dune HD device."
         }
       }
     },
diff --git a/homeassistant/components/duotecno/strings.json b/homeassistant/components/duotecno/strings.json
index 93a545d31dc..a5585c3dd2c 100644
--- a/homeassistant/components/duotecno/strings.json
+++ b/homeassistant/components/duotecno/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 Duotecno device."
         }
       }
     },