diff --git a/custom_components/auto_backup/__init__.py b/custom_components/auto_backup/__init__.py
index edeaca7..ab7c95d 100644
--- a/custom_components/auto_backup/__init__.py
+++ b/custom_components/auto_backup/__init__.py
@@ -281,7 +281,7 @@ async def new_snapshot(self, data, full=False):
 
         # add to pending snapshots and update sensor.
         self._pending_snapshots = 1
-        if (self.update_sensor_callback):
+        if self.update_sensor_callback:
             self.update_sensor_callback()
 
         # make request to create new snapshot.
@@ -345,7 +345,7 @@ async def new_snapshot(self, data, full=False):
 
         # remove from pending snapshots and update sensor.
         self._pending_snapshots = 0
-        if (self.update_sensor_callback):
+        if self.update_sensor_callback:
             self.update_sensor_callback()
 
         # purging old snapshots
@@ -376,6 +376,12 @@ async def purge_snapshots(self):
                 f"{DOMAIN}.purged_snapshots", {"snapshots": snapshots_purged}
             )
 
+            # update sensor after purge.
+            if self.update_sensor_callback:
+                self.update_sensor_callback()
+        else:
+            _LOGGER.debug("No snapshots required purging.")
+
     async def _purge_snapshot(self, slug):
         """Purge an individual snapshot from Hass.io."""
         _LOGGER.debug("Attempting to remove snapshot: %s", slug)