diff --git a/emulator.pas b/emulator.pas
index 34b983d..6d09976 100644
--- a/emulator.pas
+++ b/emulator.pas
@@ -213,7 +213,7 @@ begin
                     close (TapeIn);
                     Reader.Pos := Reader.Pos + 1;
                 except
-                    R [X] := 0;
+                    R [X] := $ff;
                 end;
                 //Save the reader state
                 if FileExists (ExpandFileName ('~/.tapes.thingamajig')) then begin