diff --git a/src/puml/class_diagram_generator.cc b/src/puml/class_diagram_generator.cc
index 3ee285e6..00d1845a 100644
--- a/src/puml/class_diagram_generator.cc
+++ b/src/puml/class_diagram_generator.cc
@@ -258,7 +258,8 @@ void generator::generate(const class_ &c, std::ostream &ostr) const
         for (const auto &b : c.parents()) {
             std::stringstream relstr;
             try {
-                relstr << m_model.to_alias(ns_relative(uns, b.name)) << " <|-- "
+                relstr << m_model.to_alias(ns_relative(uns, b.name()))
+                       << " <|-- "
                        << m_model.to_alias(ns_relative(uns, c.full_name()))
                        << '\n';
                 ostr << relstr.str();
@@ -266,7 +267,7 @@ void generator::generate(const class_ &c, std::ostream &ostr) const
             catch (error::uml_alias_missing &e) {
                 LOG_ERROR("=== Skipping inheritance relation from {} to {} due "
                           "to: {}",
-                    b.name, c.name(), e.what());
+                    b.name(), c.name(), e.what());
             }
         }
 
diff --git a/src/uml/class_diagram_model.cc b/src/uml/class_diagram_model.cc
index 23e3f770..8c0b6ec3 100644
--- a/src/uml/class_diagram_model.cc
+++ b/src/uml/class_diagram_model.cc
@@ -279,6 +279,24 @@ void class_method::add_parameter(method_parameter &&parameter)
     parameters_.emplace_back(std::move(parameter));
 }
 
+//
+// class_parent
+//
+void class_parent::set_name(const std::string &name) { name_ = name; }
+
+std::string class_parent::name() const { return name_; }
+
+void class_parent::is_virtual(bool is_virtual) { is_virtual_ = is_virtual; }
+
+bool class_parent::is_virtual() const { return is_virtual_; }
+
+void class_parent::set_access(class_parent::access_t access)
+{
+    access_ = access;
+}
+
+class_parent::access_t class_parent::access() const { return access_; }
+
 //
 // class_relationship
 //
diff --git a/src/uml/class_diagram_model.h b/src/uml/class_diagram_model.h
index 9726dd98..978a4834 100644
--- a/src/uml/class_diagram_model.h
+++ b/src/uml/class_diagram_model.h
@@ -166,11 +166,23 @@ private:
     bool is_static_{false};
 };
 
-struct class_parent {
+class class_parent {
+public:
     enum class access_t { kPublic, kProtected, kPrivate };
-    std::string name;
-    bool is_virtual{false};
-    access_t access;
+
+    void set_name(const std::string &name);
+    std::string name() const;
+
+    void is_virtual(bool is_virtual);
+    bool is_virtual() const;
+
+    void set_access(access_t access);
+    access_t access() const;
+
+private:
+    std::string name_;
+    bool is_virtual_{false};
+    access_t access_;
 };
 
 struct class_relationship : public decorated_element, public stylable_element {
diff --git a/src/uml/class_diagram_visitor.cc b/src/uml/class_diagram_visitor.cc
index e1b8869f..f23c7564 100644
--- a/src/uml/class_diagram_visitor.cc
+++ b/src/uml/class_diagram_visitor.cc
@@ -421,24 +421,24 @@ void tu_visitor::process_class_declaration(const cppast::cpp_class &cls,
     // Process class bases
     for (auto &base : cls.bases()) {
         class_parent cp;
-        cp.name = clanguml::cx::util::fully_prefixed(ctx.namespace_, base);
-        cp.is_virtual = base.is_virtual();
+        cp.set_name(clanguml::cx::util::fully_prefixed(ctx.namespace_, base));
+        cp.is_virtual(base.is_virtual());
 
         switch (base.access_specifier()) {
         case cppast::cpp_access_specifier_kind::cpp_private:
-            cp.access = class_parent::access_t::kPrivate;
+            cp.set_access(class_parent::access_t::kPrivate);
             break;
         case cppast::cpp_access_specifier_kind::cpp_public:
-            cp.access = class_parent::access_t::kPublic;
+            cp.set_access(class_parent::access_t::kPublic);
             break;
         case cppast::cpp_access_specifier_kind::cpp_protected:
-            cp.access = class_parent::access_t::kProtected;
+            cp.set_access(class_parent::access_t::kProtected);
             break;
         default:
-            cp.access = class_parent::access_t::kPublic;
+            cp.set_access(class_parent::access_t::kPublic);
         }
 
-        LOG_DBG("Found base class {} for class {}", cp.name, c.name());
+        LOG_DBG("Found base class {} for class {}", cp.name(), c.name());
 
         c.add_parent(std::move(cp));
     }
@@ -1527,8 +1527,8 @@ class_ tu_visitor::build_template_instantiation(
                 LOG_DBG("Adding template argument '{}' as base class", ct.type);
 
                 class_parent cp;
-                cp.access = class_parent::access_t::kPublic;
-                cp.name = ct.type;
+                cp.set_access(class_parent::access_t::kPublic);
+                cp.set_name(ct.type);
 
                 tinst.add_parent(std::move(cp));
             }