diff --git a/docs/notes/算法 - 符号表.md b/docs/notes/算法 - 符号表.md
index ea9683d2..1d8d759a 100644
--- a/docs/notes/算法 - 符号表.md	
+++ b/docs/notes/算法 - 符号表.md	
@@ -602,6 +602,7 @@ public Node rotateLeft(Node h) {
 public Node rotateRight(Node h) {
     Node x = h.left;
     h.left = x.right;
+    x.right = h;
     x.color = h.color;
     h.color = RED;
     x.N = h.N;