diff --git a/include/podio/detail/InterfaceIOHelpers.h b/include/podio/detail/RelationIOHelpers.h
similarity index 94%
rename from include/podio/detail/InterfaceIOHelpers.h
rename to include/podio/detail/RelationIOHelpers.h
index 515645f25..cf942b96a 100644
--- a/include/podio/detail/InterfaceIOHelpers.h
+++ b/include/podio/detail/RelationIOHelpers.h
@@ -1,5 +1,5 @@
-#ifndef PODIO_DETAIL_INTERFACEIOHELPERS_H
-#define PODIO_DETAIL_INTERFACEIOHELPERS_H
+#ifndef PODIO_DETAIL_RELATIONIOHELPERS_H
+#define PODIO_DETAIL_RELATIONIOHELPERS_H
 
 #include "podio/utilities/TypeHelpers.h"
 #include <podio/CollectionBase.h>
@@ -28,7 +28,7 @@ namespace podio::detail {
 /// @param id The ObjectID of the element that we are currently looking for
 template <typename T, typename InterfaceType>
 void tryAddTo(T, std::vector<InterfaceType>& relElements, const podio::CollectionBase* coll, const podio::ObjectID id) {
-  if (auto typedColl = dynamic_cast<const typename T::collection_type*>(coll)) {
+  if (auto typedColl = dynamic_cast<const T::collection_type*>(coll)) {
     const T tmp = (*typedColl)[id.index];
     relElements.emplace_back(tmp);
   }
@@ -87,7 +87,7 @@ void addMultiRelation(std::vector<RelType>& relElements, const podio::Collection
   if constexpr (podio::detail::isInterfaceType<RelType>) {
     addInterfaceToMultiRelation(relElements, coll, id);
   } else {
-    const auto* typeColl = static_cast<const typename RelType::collection_type*>(coll);
+    const auto* typeColl = static_cast<const RelType::collection_type*>(coll);
     relElements.emplace_back((*typeColl)[id.index]);
   }
 }
@@ -111,7 +111,7 @@ void addMultiRelation(std::vector<RelType>& relElements, const podio::Collection
 /// @param id The ObjectID of the element that we are currently looking for
 template <typename T, typename InterfaceType>
 void tryAssignTo(T, InterfaceType*& relation, const podio::CollectionBase* coll, const podio::ObjectID id) {
-  if (const auto* typeColl = dynamic_cast<const typename T::collection_type*>(coll)) {
+  if (const auto* typeColl = dynamic_cast<const T::collection_type*>(coll)) {
     relation = new InterfaceType((*typeColl)[id.index]);
   }
 }
@@ -168,11 +168,11 @@ void addSingleRelation(RelType*& relation, const podio::CollectionBase* coll, co
   if constexpr (podio::detail::isInterfaceType<RelType>) {
     addInterfaceToSingleRelation(relation, coll, id);
   } else {
-    const auto* typeColl = static_cast<const typename RelType::collection_type*>(coll);
+    const auto* typeColl = static_cast<const RelType::collection_type*>(coll);
     relation = new RelType((*typeColl)[id.index]);
   }
 }
 
 } // namespace podio::detail
 
-#endif // PODIO_DETAIL_INTERFACEIOHELPERS_H
+#endif // PODIO_DETAIL_RELATIONIOHELPERS_H
diff --git a/python/templates/CollectionData.cc.jinja2 b/python/templates/CollectionData.cc.jinja2
index c9c8f54ec..6cf76fcbe 100644
--- a/python/templates/CollectionData.cc.jinja2
+++ b/python/templates/CollectionData.cc.jinja2
@@ -9,7 +9,7 @@
 {{ include }}
 {% endfor %}
 
-#include <podio/detail/InterfaceIOHelpers.h>
+#include <podio/detail/RelationIOHelpers.h>
 
 {{ utils.namespace_open(class.namespace) }}
 {% with class_type = class.bare_type + 'CollectionData' %}