diff --git a/lib/oto/application.dart b/lib/oto/application.dart
index 1928817..02ef19f 100644
--- a/lib/oto/application.dart
+++ b/lib/oto/application.dart
@@ -120,11 +120,14 @@ class Application {
     var file = File('${_jenkinsData!.workspace}/build_data.conf');
     var content = '';
     if (Platform.isWindows) {
-      content = file
-          .readAsStringSync(
-              encoding: Platform.isWindows ? eucKr : SystemEncoding())
-          .replaceAll('BuildData=', '')
-          .replaceAll('\\', '/');
+      if (Platform.isWindows) {
+        var list = await file.readAsBytes();
+        content = eucKr.decode(list);
+      } else {
+        content = file.readAsStringSync(
+            encoding: Platform.isWindows ? eucKr : SystemEncoding());
+      }
+      content.replaceAll('BuildData=', '').replaceAll('\\', '/');
       var regEx = RegExp(r'(%)([a-zA-Z0-9]+)(%)');
       var list = regEx.allMatches(content);
       var params = <String>[];