diff --git a/homeassistant/components/mill/icons.json b/homeassistant/components/mill/icons.json
new file mode 100644
index 00000000000..13d6bb650c1
--- /dev/null
+++ b/homeassistant/components/mill/icons.json
@@ -0,0 +1,5 @@
+{
+  "services": {
+    "set_room_temperature": "mdi:thermometer"
+  }
+}