diff --git a/.editorconfig b/.editorconfig
index c3cf906..c60be47 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -3,7 +3,7 @@ root = true
 [*.{js,jsx,ts,tsx,vue,md,json,css,html}]
 charset = utf-8
 indent_style = space
-indent_size = 2
+indent_size = 4
 end_of_line = lf
 trim_trailing_whitespace = true
 insert_final_newline = true
diff --git a/00-intro/10-sum/sum.js b/00-intro/10-sum/sum.js
index 03c9923..fb70aa0 100644
--- a/00-intro/10-sum/sum.js
+++ b/00-intro/10-sum/sum.js
@@ -6,5 +6,5 @@
  * @return {number} сумма чисел a и b
  */
 export function sum(a, b) {
-  // Решение
+    return a + b;
 }