diff --git a/homeassistant/components/calendar/icons.json b/homeassistant/components/calendar/icons.json
index 06911cb2e6ec3282e9a9b6c59f5b3277d87ffd19..e4e526fe75c4bd5beb43e8c2cb5b88e585e37e50 100644
--- a/homeassistant/components/calendar/icons.json
+++ b/homeassistant/components/calendar/icons.json
@@ -1,7 +1,11 @@
 {
   "entity_component": {
     "_": {
-      "default": "mdi:calendar"
+      "default": "mdi:calendar",
+      "state": {
+        "on": "mdi:calendar-check",
+        "off": "mdi:calendar-blank"
+      }
     }
   },
   "services": {