diff --git a/Phys/DaVinciMCTools/python/DaVinciMCTools/MCTruthAndBkgCat.py b/Phys/DaVinciMCTools/python/DaVinciMCTools/MCTruthAndBkgCat.py
index 839901bb44789f20adb2aeec0c1fb0e436ae7efd..e683541752a811c674ec2495de7e58ce0f948d5c 100644
--- a/Phys/DaVinciMCTools/python/DaVinciMCTools/MCTruthAndBkgCat.py
+++ b/Phys/DaVinciMCTools/python/DaVinciMCTools/MCTruthAndBkgCat.py
@@ -8,7 +8,6 @@
 # granted to it by virtue of its status as an Intergovernmental Organization  #
 # or submit itself to any jurisdiction.                                       #
 ###############################################################################
-
 from typing import Optional
 
 import Functors as F  # type: ignore[import]
@@ -120,9 +119,7 @@ class MCTruthAndBkgCat:
             root_in_tes = "/Event"
             relations = relations_locs
 
-        mc_parts = get_mc_particles(
-            root_in_tes + "/MC/Particles"  # type: ignore[operator]
-        )
+        mc_parts = get_mc_particles()
 
         # Tool used by DaVinciSmartAssociator
         p2mctool = P2MCPFromProtoP(