diff --git a/src/u_synmemo.pas b/src/u_synmemo.pas
index 1136bcf9..cf1cc17e 100644
--- a/src/u_synmemo.pas
+++ b/src/u_synmemo.pas
@@ -3501,9 +3501,11 @@ begin
             replaceUndoableContent(newTxt);
             fModified := false;
             fFileDate := newDate;
+            fCanDscan := true;
           end;
           mrAll:
           begin
+            fCanDscan := true;
             p         := self.CaretXY;
             fModified := false;
             self.text := newTxt;