diff --git a/source-tw/chapter2/12_Subscripts.md b/source-tw/chapter2/12_Subscripts.md
index 16a66470..e418d44b 100644
--- a/source-tw/chapter2/12_Subscripts.md
+++ b/source-tw/chapter2/12_Subscripts.md
@@ -100,7 +100,7 @@ struct Matrix {
     init(rows: Int, columns: Int) {
       self.rows = rows
       self.columns = columns
-      grid = Array(count: rows * columns, repeatedValue: 0.0)
+      grid = Array(repeating: 0.0, count: rows * columns)
     }
     func indexIsValidForRow(row: Int, column: Int) -> Bool {
         return row >= 0 && row < rows && column >= 0 && column < columns