From 972ebeb905450b64dda7603a5ddd879b712a8cfc Mon Sep 17 00:00:00 2001
From: Felix Schlepper <felix.schlepper@cern.ch>
Date: Wed, 22 Apr 2026 21:02:20 +0200
Subject: [PATCH] ITS: fix truth seeding mode

Signed-off-by: Felix Schlepper <felix.schlepper@cern.ch>
---
 Detectors/ITSMFT/ITS/tracking/src/Vertexer.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Detectors/ITSMFT/ITS/tracking/src/Vertexer.cxx b/Detectors/ITSMFT/ITS/tracking/src/Vertexer.cxx
index 2acbec7fe8bc0..b4585929d2dcf 100644
--- a/Detectors/ITSMFT/ITS/tracking/src/Vertexer.cxx
+++ b/Detectors/ITSMFT/ITS/tracking/src/Vertexer.cxx
@@ -79,7 +79,6 @@ float Vertexer<NLayers>::clustersToVertices(LogFunc logger)
 
       // update LUT with all currently found vertices so in second iteration we can check vertPerROFThreshold
       sortVertices();
-      mTimeFrame->updateROFVertexLookupTable();
     }
     completed = true;
   } catch (const BoundedMemoryResource::MemoryLimitExceeded& err) {
@@ -128,6 +127,8 @@ void Vertexer<NLayers>::sortVertices()
     }
     mc.swap(sortedMC);
   }
+  // update LUT after sorting
+  mTimeFrame->updateROFVertexLookupTable();
 }
 
 template <int NLayers>