diff --git a/DDG4/include/DDG4/Geant4Primary.h b/DDG4/include/DDG4/Geant4Primary.h
index 5e6352e805271f3649816300e370d100eaee94ab..e35370fb7f5a78a3a8d2dd1c64f1768f1637972b 100644
--- a/DDG4/include/DDG4/Geant4Primary.h
+++ b/DDG4/include/DDG4/Geant4Primary.h
@@ -159,7 +159,7 @@ namespace DD4hep {
       Geant4PrimaryInteraction* get(int id) const;
       /// Number of interaction contained in the primary event
       size_t size()  const      {        return m_interactions.size();      }
-      /// Retrieve all intractions
+      /// Retrieve all interactions
       std::vector<Geant4PrimaryInteraction*> interactions() const;
     };
 
diff --git a/DDG4/src/Geant4InputHandling.cpp b/DDG4/src/Geant4InputHandling.cpp
index 4460c61491da4a289b66731451aabf8c9169176a..f8b7c41f1e6f8a35014413c507503c520681253d 100644
--- a/DDG4/src/Geant4InputHandling.cpp
+++ b/DDG4/src/Geant4InputHandling.cpp
@@ -140,7 +140,7 @@ int DD4hep::Simulation::generationInitialization(const Geant4Action* /* caller *
   /**
    *  This action should register all event extension required for the further
    *  processing. We want to avoid that every client has to check if a given
-   *  object is present or not and than later install the required data structures.
+   *  object is present or not and then later install the required data structures.
    */
   context->event().addExtension(new Geant4PrimaryMap());