diff --git a/src/tess.adb b/src/tess.adb
index 2aaa481..ec59505 100644
--- a/src/tess.adb
+++ b/src/tess.adb
@@ -12,7 +12,7 @@ procedure Tess is
    Input : File_Type;
 begin
    Ada.Text_IO.Put_Line("Tess started.");
-   Open(Input, In_File, "inelev.dat");
+   Open(Input, In_File, "sample-data/katie.dat");
    Info := Dtm.Katie.Get_Info(Input);
 
    Put_Line(Get_X(Info)'Image);