diff --git a/source/geometries/Next100FieldCage.cc b/source/geometries/Next100FieldCage.cc
index 43a1a12ff..6b1e0e427 100644
--- a/source/geometries/Next100FieldCage.cc
+++ b/source/geometries/Next100FieldCage.cc
@@ -592,22 +592,7 @@ void Next100FieldCage::BuildELRegion()
   G4Tubs* el_gap_solid;
   G4LogicalVolume* el_gap_logic;
 
-
-  if (elfield_) {
-    /// Define EL electric field
-    UniformElectricDriftField* el_field = new UniformElectricDriftField();
-    G4double global_el_gap_zpos = el_gap_zpos_ - GetCoordOrigin().z();
-    el_field->SetCathodePosition(global_el_gap_zpos + el_gap_length_/2. + grid_thickn_);
-    el_field->SetAnodePosition  (global_el_gap_zpos - el_gap_length_/2. - grid_thickn_);
-    el_field->SetDriftVelocity(2.5 * mm/microsecond);
-    el_field->SetTransverseDiffusion(ELtransv_diff_);
-    el_field->SetLongitudinalDiffusion(ELlong_diff_);
-    el_field->SetLightYield(XenonELLightYield(ELelectric_field_, pressure_));
-    G4Region* el_region = new G4Region("EL_REGION");
-    el_region->SetUserInformation(el_field);
-    el_region->AddRootLogicalVolume(el_gap_logic);
-  }
-
+  // Logical Volumes
   G4LogicalVolume *el_grid_logic;
   G4LogicalVolume *el_hex_logic;
 
@@ -753,6 +738,21 @@ void Next100FieldCage::BuildELRegion()
                              el_grid_logic, gas_mesh_opsur);
   }
 
+  if (elfield_) {
+    /// Define EL electric field
+    UniformElectricDriftField* el_field = new UniformElectricDriftField();
+    G4double global_el_gap_zpos = el_gap_zpos_ - GetCoordOrigin().z();
+    el_field->SetCathodePosition(global_el_gap_zpos + el_gap_length_/2. + grid_thickn_);
+    el_field->SetAnodePosition  (global_el_gap_zpos - el_gap_length_/2. - grid_thickn_);
+    el_field->SetDriftVelocity(2.5 * mm/microsecond);
+    el_field->SetTransverseDiffusion(ELtransv_diff_);
+    el_field->SetLongitudinalDiffusion(ELlong_diff_);
+    el_field->SetLightYield(XenonELLightYield(ELelectric_field_, pressure_));
+    G4Region* el_region = new G4Region("EL_REGION");
+    el_region->SetUserInformation(el_field);
+    el_region->AddRootLogicalVolume(el_gap_logic);
+  }
+
   // Vertex generator
   if (el_gap_gen_disk_zmin_ > el_gap_gen_disk_zmax_)
     G4Exception("[Next100FieldCage]", "Next100FieldCage()",