diff --git a/src/chess-pgn.vala b/src/chess-pgn.vala
index 6a66bd3..ebce1b9 100644
--- a/src/chess-pgn.vala
+++ b/src/chess-pgn.vala
@@ -160,7 +160,7 @@ public class PGNGame
         data.append (result);
         data.append ("\n");
 
-        file.replace_contents (data.data, null, false, FileCreateFlags.NONE, null);
+        file.replace_contents (data.str.data, null, false, FileCreateFlags.NONE, null);
     }
 }