diff --git a/homeassistant/components/ping/strings.json b/homeassistant/components/ping/strings.json
index 31441df7736..12bc1d25c7a 100644
--- a/homeassistant/components/ping/strings.json
+++ b/homeassistant/components/ping/strings.json
@@ -7,6 +7,9 @@
         "data": {
           "host": "[%key:common::config_flow::data::host%]",
           "count": "Ping count"
+        },
+        "data_description": {
+          "host": "The hostname or IP address of the device you want to ping."
         }
       }
     },
diff --git a/homeassistant/components/progettihwsw/strings.json b/homeassistant/components/progettihwsw/strings.json
index bb98d565594..d50c6f8d4e3 100644
--- a/homeassistant/components/progettihwsw/strings.json
+++ b/homeassistant/components/progettihwsw/strings.json
@@ -13,6 +13,9 @@
         "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 ProgettiHWSW board."
         }
       },
       "relay_modes": {
diff --git a/homeassistant/components/qnap/strings.json b/homeassistant/components/qnap/strings.json
index a5fa3c8a897..d535b9f0e87 100644
--- a/homeassistant/components/qnap/strings.json
+++ b/homeassistant/components/qnap/strings.json
@@ -11,6 +11,9 @@
           "port": "[%key:common::config_flow::data::port%]",
           "ssl": "[%key:common::config_flow::data::ssl%]",
           "verify_ssl": "[%key:common::config_flow::data::verify_ssl%]"
+        },
+        "data_description": {
+          "host": "The hostname or IP address of your QNAP device."
         }
       }
     },