diff --git a/custom_components/waste_collection_schedule/__init__.py b/custom_components/waste_collection_schedule/__init__.py
index 42fc848a..82e20e10 100644
--- a/custom_components/waste_collection_schedule/__init__.py
+++ b/custom_components/waste_collection_schedule/__init__.py
@@ -7,7 +7,7 @@ from random import randrange
 import homeassistant.helpers.config_validation as cv
 import homeassistant.util.dt as dt_util
 import voluptuous as vol
-from homeassistant.core import HomeAssistant, callback
+from homeassistant.core import HomeAssistant, ServiceCall, callback
 from homeassistant.helpers.dispatcher import dispatcher_send
 
 from .const import DOMAIN, UPDATE_SENSORS_SIGNAL
@@ -123,12 +123,14 @@ async def async_setup(hass: HomeAssistant, config: dict):
 
     # initial fetch of all data
     hass.add_job(api._fetch)
-    
-    def fetch_data():
+
+    async def async_fetch_data(service: ServiceCall) -> None:
         hass.add_job(api._fetch)
 
     # Register new Service fetch_data
-    hass.services.async_register(DOMAIN, 'fetch_data', fetch_data)
+    hass.services.async_register(
+        DOMAIN, "fetch_data", async_fetch_data, schema=vol.Schema({})
+    )
 
     return True
 
diff --git a/custom_components/waste_collection_schedule/services.yaml b/custom_components/waste_collection_schedule/services.yaml
index 1a316482..c6838ceb 100644
--- a/custom_components/waste_collection_schedule/services.yaml
+++ b/custom_components/waste_collection_schedule/services.yaml
@@ -1,3 +1,3 @@
 fetch_data:
-  name: fetch_data
-  description: fetch current source data
\ No newline at end of file
+  name: Fetch data from all sources.
+  description: Fetch data from all sources.