diff --git a/docs/05 Advanced Lighting/01 Advanced Lighting.md b/docs/05 Advanced Lighting/01 Advanced Lighting.md
index 6d472dd..36ab664 100644
--- a/docs/05 Advanced Lighting/01 Advanced Lighting.md	
+++ b/docs/05 Advanced Lighting/01 Advanced Lighting.md	
@@ -34,7 +34,7 @@
 获取半程向量的方法很简单，只需要将光线的方向向量和观察向量加到一起，并将结果正规化(Normalize)就可以了：
 
 $$
-\(\bar{H} = \frac{\bar{L} + \bar{V}}{||\bar{L} + \bar{V}||}\)
+\bar{H} = \frac{\bar{L} + \bar{V}}{||\bar{L} + \bar{V}||}
 $$
 
 翻译成GLSL代码如下：