diff --git a/homeassistant/components/zha/core/discovery.py b/homeassistant/components/zha/core/discovery.py
index 1d9edb82980..780d7bc384b 100644
--- a/homeassistant/components/zha/core/discovery.py
+++ b/homeassistant/components/zha/core/discovery.py
@@ -234,6 +234,7 @@ class GroupProbe:
             unsub()
             self._unsubs.remove(unsub)
 
+    @callback
     def _reprobe_group(self, group_id: int) -> None:
         """Reprobe a group for entities after its members change."""
         zha_gateway = self._hass.data[zha_const.DATA_ZHA][zha_const.DATA_ZHA_GATEWAY]