diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server.rs
index 7105035a9..89be0ef79 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server.rs
@@ -2306,7 +2306,7 @@ impl CodexAppServerConnection {
                                 ));
                             }
                             append_direct_project_history_item_at(history_root, &item)
-                                .map_err(platform_llm::LlmError::Transport)?;
+                                .map_err(platform_llm::LlmError::InvalidRequest)?;
                             direct_project_history.complete_item(&item);
                         }
                     }