diff --git a/Core/include/ACTS/Digitization/CartesianSegmentation.hpp b/Core/include/ACTS/Digitization/CartesianSegmentation.hpp
index 3257e716752e113c5faa2d7ba76944dd8db4501f..eb7e0952b94fa4d364046bbd992220bf4b6e5e14 100644
--- a/Core/include/ACTS/Digitization/CartesianSegmentation.hpp
+++ b/Core/include/ACTS/Digitization/CartesianSegmentation.hpp
@@ -104,12 +104,12 @@ public:
   /// return the surface bounds by reference
   /// specialization for Rectangle Bounds
   const PlanarBounds&
-  moduleBounds() const final;
+  moduleBounds() const final override;
 
   /// return the bin utility that defines the
   /// readout segmentation
   const BinUtility&
-  binUtility() const final;
+  binUtility() const final override;
 
 private:
   template <class T>
diff --git a/Core/include/ACTS/Digitization/DigitizationModule.hpp b/Core/include/ACTS/Digitization/DigitizationModule.hpp
index c780ebd3933fdafaf522e10412aba033073aa0cb..dc35c38b16d12a6bfde3ef06c9a78e7578c80f85 100644
--- a/Core/include/ACTS/Digitization/DigitizationModule.hpp
+++ b/Core/include/ACTS/Digitization/DigitizationModule.hpp
@@ -61,6 +61,7 @@ public:
 
   /// Virtual Destructor
   virtual ~DigitizationModule() {}
+  
   /// Return the internal test segmentation surfaces to test between entry
   /// and exit given by their cell id's - the boundaries are not given
   ///
diff --git a/Core/include/ACTS/Digitization/PlanarModuleCluster.hpp b/Core/include/ACTS/Digitization/PlanarModuleCluster.hpp
index 220dd6a0c9151c88fce07273a087258d2bae7423..0e2eeb74345d81537b2b16e05c07a28f4a2d40d0 100644
--- a/Core/include/ACTS/Digitization/PlanarModuleCluster.hpp
+++ b/Core/include/ACTS/Digitization/PlanarModuleCluster.hpp
@@ -64,7 +64,7 @@ public:
 
 private:
   std::vector<DigitizationCell> m_digitizationCells;  /// the digitization cells
-  std::vector<barcode_type>     m_barcodes;           /// barcode types
+  std::vector<barcode_type>     m_barcodes;           /// barcodes of particles 
 };
 
 inline const std::vector<DigitizationCell>&