diff --git a/tests/webtbs/tw8187.pp b/tests/webtbs/tw8187.pp
index a0544bb31e..07bb4f9587 100644
--- a/tests/webtbs/tw8187.pp
+++ b/tests/webtbs/tw8187.pp
@@ -23,5 +23,6 @@ begin
 end;
   
 begin
+  LongTimeFormat:='hh:nn:ss';
   CheckTime;
 end.
\ No newline at end of file