diff --git a/homeassistant/components/shelly/strings.json b/homeassistant/components/shelly/strings.json
index 8ca16e2a2b5..b678ab8250f 100644
--- a/homeassistant/components/shelly/strings.json
+++ b/homeassistant/components/shelly/strings.json
@@ -17,12 +17,20 @@
         "data": {
           "username": "[%key:common::config_flow::data::username%]",
           "password": "[%key:common::config_flow::data::password%]"
+        },
+        "data_description": {
+          "username": "Username for the device's web panel.",
+          "password": "Password for the device's web panel."
         }
       },
       "reauth_confirm": {
         "data": {
           "username": "[%key:common::config_flow::data::username%]",
           "password": "[%key:common::config_flow::data::password%]"
+        },
+        "data_description": {
+          "username": "[%key:component::shelly::config::step::credentials::data_description::username%]",
+          "password": "[%key:component::shelly::config::step::credentials::data_description::password%]"
         }
       },
       "confirm_discovery": {