diff --git a/source/_cookbook/python_component_basic_service.markdown b/source/_cookbook/python_component_basic_service.markdown
index e6f6bd6b367..5c53ecc1c99 100644
--- a/source/_cookbook/python_component_basic_service.markdown
+++ b/source/_cookbook/python_component_basic_service.markdown
@@ -28,7 +28,7 @@ def setup(hass, config):
     def handle_hello(call):
         name = call.data.get(ATTR_NAME, DEFAULT_NAME)
 
-        hass.states.set('hello.service.hello', name)
+        hass.states.set('hello_service.hello', name)
 
     hass.services.register(DOMAIN, 'hello', handle_hello)