diff --git a/src/BeamAdapter/component/controller/InterventionalRadiologyController.inl b/src/BeamAdapter/component/controller/InterventionalRadiologyController.inl
index 1165384a8..f50fc6e5f 100644
--- a/src/BeamAdapter/component/controller/InterventionalRadiologyController.inl
+++ b/src/BeamAdapter/component/controller/InterventionalRadiologyController.inl
@@ -672,7 +672,7 @@ void InterventionalRadiologyController<DataTypes>::interventionalRadiologyCollis
 
         // 3. we look for the mechanical sampling of the current instrument in order to "place" the following point
         Real xIncr;
-        m_instrumentsList[firstInstruOnx]->getMechanicalSampling(xIncr, xPointList[i]);
+        m_instrumentsList[firstInstruOnx]->getCollisionSampling(xIncr, xPointList[i]);
         xAbsCurv -= xIncr;
 
         // the following point could not have x_abs_curv<0;