diff --git a/homeassistant/components/palazzetti/strings.json b/homeassistant/components/palazzetti/strings.json
index 718a21f1889c5..435ec0aab857d 100644
--- a/homeassistant/components/palazzetti/strings.json
+++ b/homeassistant/components/palazzetti/strings.json
@@ -27,7 +27,7 @@
     "invalid_fan_mode": {
       "message": "Fan mode {value} is invalid."
     },
-    "invalid_target_temperatures": {
+    "invalid_target_temperature": {
       "message": "Target temperature {value} is invalid."
     },
     "cannot_connect": {