diff --git a/src/plugins/PFC/pfc_KnowledgeFetcher.py b/src/plugins/PFC/pfc_KnowledgeFetcher.py
index 7453aa0e6..171ba7050 100644
--- a/src/plugins/PFC/pfc_KnowledgeFetcher.py
+++ b/src/plugins/PFC/pfc_KnowledgeFetcher.py
@@ -69,8 +69,9 @@ class KnowledgeFetcher:
             fast_retrieval=False,
         )
         knowledge_text = ""
-        sources = []
+        sources_text = "无记忆匹配"  # 默认值
         if related_memory:
+            sources = []
             for memory in related_memory:
                 knowledge_text += memory[1] + "\n"
                 sources.append(f"记忆片段{memory[0]}")
diff --git a/src/plugins/PFC/reply_generator.py b/src/plugins/PFC/reply_generator.py
index f813e140d..3de22fcf6 100644
--- a/src/plugins/PFC/reply_generator.py
+++ b/src/plugins/PFC/reply_generator.py
@@ -137,7 +137,7 @@ class ReplyGenerator:
         else:
             goals_str = "- 目前没有明确对话目标\n"  # 简化无目标情况
 
-           # --- 新增：构建知识信息字符串 ---
+        # --- 新增：构建知识信息字符串 ---
         knowledge_info_str = "【供参考的相关知识和记忆】\n" # 稍微改下标题，表明是供参考
         try:
             # 检查 conversation_info 是否有 knowledge_list 并且不为空
@@ -156,7 +156,7 @@ class ReplyGenerator:
                         knowledge_info_str += f"{i+1}. 发现一条格式不正确的知识记录。\n"
 
                 if not recent_knowledge:
-                     knowledge_info_str += "- 暂无。\n" # 更简洁的提示
+                    knowledge_info_str += "- 暂无。\n" # 更简洁的提示
 
             else:
                 knowledge_info_str += "- 暂无。\n"