diff --git a/solutions/11. Container With Most Water.md b/solutions/11. Container With Most Water.md
index c8abcae..09d8721 100644
--- a/solutions/11. Container With Most Water.md	
+++ b/solutions/11. Container With Most Water.md	
@@ -17,8 +17,8 @@ public:
         while(left < right){
             int h = min(height[left], height[right]); // 当前容器高度
             res = max(res, h * (right - left));
-            while(height[left] <= h) left++;  // 跳过高度不够高的
-            while(height[right] <= h) right--;
+            while(height[left] <= h && left < right) left++;  // 跳过高度不够高的
+            while(height[right] <= h && left < right) right--;
         }
         return res;
     }