diff --git a/source/main.pas b/source/main.pas
index 7e13edd2..1401a8a7 100644
--- a/source/main.pas
+++ b/source/main.pas
@@ -10834,7 +10834,7 @@ begin
   // Resize "Size" column in dbtree to hold widest possible byte numbers without cutting text
   VT := Sender as TVirtualStringTree;
   if (VT.Header.Columns.Count >= 2) and (coVisible in VT.Header.Columns[1].Options) then
-    VT.Header.Columns[1].Width := TextWidth(VT.Canvas, FormatByteNumber(SIZE_KB*1023)) + VT.TextMargin*2 + 4;
+    VT.Header.Columns[1].Width := TextWidth(VT.Canvas, FormatByteNumber(SIZE_KB*999)) + VT.TextMargin*2 + 4;
 end;