diff --git a/macro/beamtime/mcbm2021/check_timing_any.C b/macro/beamtime/mcbm2021/check_timing_any.C
index a4a2ac9f3b999e571346f49dcea45574ba6980f1..6103942d2761dff2482e96a125d92515a969df19 100644
--- a/macro/beamtime/mcbm2021/check_timing_any.C
+++ b/macro/beamtime/mcbm2021/check_timing_any.C
@@ -76,6 +76,7 @@ void check_timing_any(TString fileName, UInt_t uRunId = 0, Int_t nEvents = 0, TS
 
   /// Add detectors not in default list
   //timeChecker->AddCheckDetector(ECbmModuleId::kTrd2d, "Trd2d", -3000, 3000, 160 * 3);
+  timeChecker->SetDetectorDifferential(ECbmModuleId::kTrd, {"5", "21", "37", "53"});
 
   if (0 < uRunId) timeChecker->SetOutFilename(Form("%s/HistosTimeCheck_%03u.root", outDir.Data(), uRunId));
   fRun->AddTask(timeChecker);