diff --git a/Detectors/Upgrades/ALICE3/TRK/base/src/GeometryTGeo.cxx b/Detectors/Upgrades/ALICE3/TRK/base/src/GeometryTGeo.cxx
index 9325f5079375d..b516918f6fdaa 100644
--- a/Detectors/Upgrades/ALICE3/TRK/base/src/GeometryTGeo.cxx
+++ b/Detectors/Upgrades/ALICE3/TRK/base/src/GeometryTGeo.cxx
@@ -275,13 +275,15 @@ TString GeometryTGeo::getMatrixPath(int index) const
 
   if (subDetID == 0) { // VD
     if (disk >= 0) {
-      path += Form("%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalDiskPattern(), disk);                                   // PETALCASEx_DISKy_1
-      path += Form("%s%d_%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalDiskPattern(), disk, getTRKChipPattern(), disk);   // PETALCASEx_DISKy_TRKChipy_1
+      path += Form("%s_%d_%d/", getTRKPetalAssemblyPattern(), petalcase, petalcase + 1);             // PETAL_n
+      path += Form("%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalDiskPattern(), disk); // PETALCASEx_DISKy_1
+      // path += Form("%s%d_%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalDiskPattern(), disk, getTRKChipPattern(), disk);   // PETALCASEx_DISKy_TRKChipy_1
       path += Form("%s%d_%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalDiskPattern(), disk, getTRKSensorPattern(), disk); // PETALCASEx_DISKy_TRKSensory_1
     } else if (layer >= 0) {
-      path += Form("%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalLayerPattern(), layer);                                    // PETALCASEx_LAYERy_1
-      path += Form("%s%d_%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalLayerPattern(), layer, getTRKStavePattern(), layer);  // PETALCASEx_LAYERy_TRKStavey_1
-      path += Form("%s%d_%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalLayerPattern(), layer, getTRKChipPattern(), layer);   // PETALCASEx_LAYERy_TRKChipy_1
+      path += Form("%s_%d_%d/", getTRKPetalAssemblyPattern(), petalcase, petalcase + 1);               // PETAL_n
+      path += Form("%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalLayerPattern(), layer); // PETALCASEx_LAYERy_1
+      // path += Form("%s%d_%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalLayerPattern(), layer, getTRKStavePattern(), layer);  // PETALCASEx_LAYERy_TRKStavey_1
+      // path += Form("%s%d_%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalLayerPattern(), layer, getTRKChipPattern(), layer);   // PETALCASEx_LAYERy_TRKChipy_1
       path += Form("%s%d_%s%d_%s%d_1/", getTRKPetalPattern(), petalcase, getTRKPetalLayerPattern(), layer, getTRKSensorPattern(), layer); // PETALCASEx_LAYERy_TRKSensory_1
     }
   } else if (subDetID == 1) {                                          // MLOT