diff --git a/problems/0452.用最少数量的箭引爆气球.md b/problems/0452.用最少数量的箭引爆气球.md
index a2168dfc..07141558 100644
--- a/problems/0452.用最少数量的箭引爆气球.md
+++ b/problems/0452.用最少数量的箭引爆气球.md
@@ -236,7 +236,7 @@ int findMinArrowShots(int** points, int pointsSize, int* pointsColSize){
         if(points[i][0] > points[i-1][1])
             arrowNum++;
         else
-            //若前一个气球与当前气球重叠，判断并最小的x_end
+            //若前一个气球与当前气球重叠，判断并更新最小的x_end
             points[i][1] = points[i][1] > points[i-1][1] ? points[i-1][1] : points[i][1];
     }
     return arrowNum;