diff --git a/src/u_synmemo.pas b/src/u_synmemo.pas
index 3f6a3be6..3fe247a0 100644
--- a/src/u_synmemo.pas
+++ b/src/u_synmemo.pas
@@ -2151,7 +2151,7 @@ end;
 procedure TDexedMemo.scrollCentered(down: boolean);
 begin
   centerCursor();
-  if down then
+  if not down then
   begin
     ExecuteCommand(ecScrollDown, #0, nil);
     CaretY := CaretY - 1;