diff --git a/lib/chessapp/chess_utils.dart b/lib/chessapp/chess_utils.dart
index 3e24caf..58aa0ae 100644
--- a/lib/chessapp/chess_utils.dart
+++ b/lib/chessapp/chess_utils.dart
@@ -62,10 +62,10 @@ class ChessCoordinate {
 
   @override
   String toString() {
-    String row = this.row.toString();
-    String col = this.column.toString();
+    String rowStr = row.toString();
+    String colStr = column.toString();
 
-    return '$col$row';
+    return '$colStr$rowStr';
   }
 
   @override