diff --git a/DDDigi/io/Digi2edm4hepOutput.cpp b/DDDigi/io/Digi2edm4hepOutput.cpp
index 792c0f81de5faf12c6935e0373be59105ba205e8..351dc08a515971f1f0ec021ae46226b6bfdcedfe 100644
--- a/DDDigi/io/Digi2edm4hepOutput.cpp
+++ b/DDDigi/io/Digi2edm4hepOutput.cpp
@@ -315,7 +315,7 @@ namespace dd4hep {
       internals->create_collections();
     }
 
-     /// Check for valid output stream
+    /// Check for valid output stream
     bool Digi2edm4hepOutput::have_output()  const  {
       return internals->m_file.get() != nullptr;
     }
diff --git a/DDDigi/io/DigiIO.h b/DDDigi/io/DigiIO.h
index a75e0d877ec6cc7785fb67fb81b18278ceda80b9..58d7bcf1fd170c52683a446fdefde64e094aed9b 100644
--- a/DDDigi/io/DigiIO.h
+++ b/DDDigi/io/DigiIO.h
@@ -76,7 +76,7 @@ namespace dd4hep {
       void _to_edm4hep(const FIRST& first, SECOND& second, int hit_type);
 
       template <typename FIRST, typename SECOND> static
-	void _to_edm4hep(const FIRST& cont, SECOND coll, int hit_type);
+      void _to_edm4hep(const FIRST& cont, SECOND coll, int hit_type);
 
       template <typename FIRST, typename SECOND, typename THIRD> static
       void _to_edm4hep(const FIRST& first, const SECOND& second, THIRD& third, int hit_type);
diff --git a/DDDigi/python/DDDigiDict.C b/DDDigi/python/DDDigiDict.C
index 108ff020aa01beb6acde8ab690e08a8e98765a35..786f669f58d99e87b67fe40cbebf7245f69be40c 100644
--- a/DDDigi/python/DDDigiDict.C
+++ b/DDDigi/python/DDDigiDict.C
@@ -197,7 +197,6 @@ namespace dd4hep {
 #pragma link C++ namespace dd4hep::digi;
 
 ///---- Digi data item wrappers
-//#pragma link C++ class dd4hep::digi::Key;
 #pragma link C++ class std::pair<dd4hep::digi::Key::key_type, dd4hep::digi::Particle>+;
 #pragma link C++ class std::map<dd4hep::digi::Key::key_type, dd4hep::digi::Particle>+;
 #pragma link C++ class std::map<dd4hep::digi::Key::key_type, dd4hep::digi::Particle*>+;