diff --git a/backend/internal/handler/api_key_handler.go b/backend/internal/handler/api_key_handler.go
index 9d6c6c1523..e0d73b390d 100644
--- a/backend/internal/handler/api_key_handler.go
+++ b/backend/internal/handler/api_key_handler.go
@@ -131,7 +131,7 @@ func (h *APIKeyHandler) GetByID(c *gin.Context) {
 
 	// 验证所有权
 	if key.UserID != subject.UserID {
-		response.Forbidden(c, "Not authorized to access this key")
+		response.NotFound(c, "API key not found")
 		return
 	}