diff --git a/packages/core/src/llm-core/prompt/preset_prompt_parse.ts b/packages/core/src/llm-core/prompt/preset_prompt_parse.ts
index f1fc4cde7..984c52301 100644
--- a/packages/core/src/llm-core/prompt/preset_prompt_parse.ts
+++ b/packages/core/src/llm-core/prompt/preset_prompt_parse.ts
@@ -67,7 +67,7 @@ function loadYamlPreset(rawText: string): PresetTemplate {
 
     let authorsNote: PresetTemplate['authorsNote'] | undefined
 
-    if (rawJson.world_lores) {
+    if (rawJson.world_lores && Array.isArray(rawJson.world_lores)) {
         const config = rawJson.world_lores.find(
             isRoleBookConfig
         ) as RoleBookConfig