diff --git a/neon_llm_core/utils/personas/state.py b/neon_llm_core/utils/personas/state.py
index f36e76d..94be76d 100644
--- a/neon_llm_core/utils/personas/state.py
+++ b/neon_llm_core/utils/personas/state.py
@@ -69,7 +69,7 @@ def add_persona_handler(self, persona: PersonaModel) -> Union[LLMBot, None]:
             LOG.warning(f"Persona disabled: '{persona.id}'")
             return
         # Get a configured username to use for LLM submind connections
-        persona_id = f"{persona.id}-{self.service_name}"
+        persona_id = f"{persona.id}_{self.service_name}"
         self.ovos_config["MQ"]["users"][persona_id] = self.mq_config['users']['neon_llm_submind']
         bot = LLMBot(llm_name=self.service_name, service_name=persona_id,
                      persona=persona_dict, config=self.ovos_config,