diff --git a/homeassistant/components/calendar/strings.json b/homeassistant/components/calendar/strings.json
index 81334c1237966..20679ed09b2e5 100644
--- a/homeassistant/components/calendar/strings.json
+++ b/homeassistant/components/calendar/strings.json
@@ -24,7 +24,7 @@
         "location": {
           "name": "Location"
         },
-        "messages": {
+        "message": {
           "name": "Message"
         },
         "start_time": {