diff --git a/test/functionalTest/cases/4085_custom_notifications_ngsi_payload/custom_notification_mqtt_ngsi_mapping_constant_attribute_compound.test b/test/functionalTest/cases/4085_custom_notifications_ngsi_payload/custom_notification_mqtt_ngsi_mapping_constant_attribute_compound.test
index 59271fef39..8647a08b8a 100644
--- a/test/functionalTest/cases/4085_custom_notifications_ngsi_payload/custom_notification_mqtt_ngsi_mapping_constant_attribute_compound.test
+++ b/test/functionalTest/cases/4085_custom_notifications_ngsi_payload/custom_notification_mqtt_ngsi_mapping_constant_attribute_compound.test
@@ -133,7 +133,7 @@ echo
 # unknown reason in ubuntu-22.04 fails if we don't add this. It doesn't make
 # sense to me (both Orion and mosquitto runs in containers on top of ubuntu OS)
 # but it happens... (maybe some kind of networking effect in the docker host?)
-sleep 0.75s
+sleep 1s
 
 
 --REGEXPECT--