diff --git a/docs/ko/level-2-systems/permission-system.md b/docs/ko/level-2-systems/permission-system.md
index 30b93ce..981dad8 100644
--- a/docs/ko/level-2-systems/permission-system.md
+++ b/docs/ko/level-2-systems/permission-system.md
@@ -360,6 +360,6 @@ type PermissionDecisionReason =
 
 ## Navigation
 
-- 이전: [Tool 시스템](tool-system.md)
+- 이전: [커맨드 시스템](command-system.md)
 - 다음: [에이전트 오케스트레이션](agent-coordinator.md)
 - 상위: [목차](../README.md)
diff --git a/docs/ko/level-2-systems/query-engine.md b/docs/ko/level-2-systems/query-engine.md
index a20ee5d..d8080b3 100644
--- a/docs/ko/level-2-systems/query-engine.md
+++ b/docs/ko/level-2-systems/query-engine.md
@@ -15,7 +15,7 @@ graph TD
     QE["QueryEngine\n(src/QueryEngine.ts)"]
     ASK["ask()\n편의 래퍼"]
     QUERY["query()\n(src/query.ts)"]
-    CLAUDE["services/api/claude.ts\nAnthropics API 클라이언트"]
+    CLAUDE["services/api/claude.ts\nAnthropic API 클라이언트"]
     TOOLS["Tool 시스템\n(src/Tool.ts)"]
     COST["cost-tracker.ts\n비용·토큰 집계"]
     COMPACT["services/compact/\n컨텍스트 압축"]