diff --git a/Tracking/TrkVertexFitter/TrkVertexFitters/src/AdaptiveVertexFitter.cxx b/Tracking/TrkVertexFitter/TrkVertexFitters/src/AdaptiveVertexFitter.cxx
index 1409b9518c1a6ca6a6298a41457d18c125e3adcc..d2bae3fc02167f13e27c3ab71d9c14d3108e3483 100755
--- a/Tracking/TrkVertexFitter/TrkVertexFitters/src/AdaptiveVertexFitter.cxx
+++ b/Tracking/TrkVertexFitter/TrkVertexFitters/src/AdaptiveVertexFitter.cxx
@@ -560,7 +560,7 @@ namespace Trk
     const std::vector<const Trk::NeutralParameters*>& neutralPerigeeList,
     const xAOD::Vertex& constraint) const
   {
-    return _fit(perigeeList,neutralPerigeeList,constraint,Amg::Vector3D(),true);
+    return _fit(perigeeList,neutralPerigeeList,constraint,Amg::Vector3D::Zero(),true);
   }
 
   xAOD::Vertex*