diff --git a/TinySTL/Detail/AVLTree.impl.h b/TinySTL/Detail/AVLTree.impl.h
index ddd5d59..01229a5 100644
--- a/TinySTL/Detail/AVLTree.impl.h
+++ b/TinySTL/Detail/AVLTree.impl.h
@@ -32,8 +32,7 @@ namespace TinySTL{
 					parent_.push(ptr_);
 					ptr_ = ptr_->left_;
 				}
-			}
-			else{//node无右子树则只能向父节点路径移动
+			}else{//node无右子树则只能向父节点路径移动
 				ptr_ = 0;//add 2015.01.14
 				while (!parent_.empty()){
 					ptr_ = parent_.top();