diff --git a/homeassistant/components/dyson/services.yaml b/homeassistant/components/dyson/services.yaml
index a93b15b4304..1b59217f6ab 100644
--- a/homeassistant/components/dyson/services.yaml
+++ b/homeassistant/components/dyson/services.yaml
@@ -59,6 +59,6 @@ set_speed:
     entity_id:
       description: Name(s) of the entities to set the speed for
       example: 'fan.living_room'
-    timer:
+    dyson_speed:
       description: Speed
       example: 1
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