diff --git a/custom_components/aguaiot/const.py b/custom_components/aguaiot/const.py
index 857b5d3..7f10035 100644
--- a/custom_components/aguaiot/const.py
+++ b/custom_components/aguaiot/const.py
@@ -422,7 +422,7 @@ class AguaIOTCanalizationEntityDescription(ClimateEntityDescription):
     ),
     AguaIOTCanalizationEntityDescription(
         name="Canalization {id}",
-        key=r"canalization_(?P<id>[\w\d]+)_set",
+        key=r"canalization_(?P<id>[a-zA-Z0-9]+)_set",
         icon="mdi:fan",
     ),
     AguaIOTCanalizationEntityDescription(