diff --git a/src/ai/ai_client.c b/src/ai/ai_client.c
index 32761284..c6b20366 100644
--- a/src/ai/ai_client.c
+++ b/src/ai/ai_client.c
@@ -1088,7 +1088,6 @@ ai_session_unref(AISession* session)
         return;
     }
 
-    pthread_mutex_lock(&session->lock);
     g_free(session->provider_name);
     ai_provider_unref(session->provider);
     g_free(session->model);
@@ -1103,7 +1102,8 @@ ai_session_unref(AISession* session)
         curr = g_list_next(curr);
     }
     g_list_free(session->history);
-    pthread_mutex_unlock(&session->lock);
+
+    pthread_mutex_destroy(&session->lock);
 
     g_free(session);
     log_debug("AI session destroyed");