diff --git a/src/core/examples/main-ptr.cc b/src/core/examples/main-ptr.cc
index 7c2ae07db..c39f437e1 100644
--- a/src/core/examples/main-ptr.cc
+++ b/src/core/examples/main-ptr.cc
@@ -26,6 +26,12 @@ using namespace ns3;
 class PtrExample : public Object
 {
   public:
+    /**
+     * @brief Get the type ID.
+     * @return the object TypeId
+     */
+    static TypeId GetTypeId();
+
     /** Constructor. */
     PtrExample();
     /** Destructor. */
@@ -34,6 +40,16 @@ class PtrExample : public Object
     void Method();
 };
 
+NS_OBJECT_ENSURE_REGISTERED(PtrExample);
+
+TypeId
+PtrExample::GetTypeId()
+{
+    static TypeId tid =
+        TypeId("ns3::PtrExample").SetParent<Object>().SetGroupName("Core").HideFromDocumentation();
+    return tid;
+}
+
 PtrExample::PtrExample()
 {
     std::cout << "PtrExample constructor" << std::endl;
diff --git a/src/internet/model/ipv6-autoconfigured-prefix.cc b/src/internet/model/ipv6-autoconfigured-prefix.cc
index 2a9f3ca4b..20a19cb78 100644
--- a/src/internet/model/ipv6-autoconfigured-prefix.cc
+++ b/src/internet/model/ipv6-autoconfigured-prefix.cc
@@ -18,8 +18,18 @@ namespace ns3
 
 NS_LOG_COMPONENT_DEFINE("Ipv6AutoconfiguredPrefix");
 
+NS_OBJECT_ENSURE_REGISTERED(Ipv6AutoconfiguredPrefix);
+
 uint32_t Ipv6AutoconfiguredPrefix::m_prefixId = 0;
 
+TypeId
+Ipv6AutoconfiguredPrefix::GetTypeId()
+{
+    static TypeId tid =
+        TypeId("ns3::Ipv6AutoconfiguredPrefix").SetParent<Object>().SetGroupName("Internet");
+    return tid;
+}
+
 Ipv6AutoconfiguredPrefix::Ipv6AutoconfiguredPrefix(Ptr<Node> node,
                                                    uint32_t interface,
                                                    Ipv6Address prefix,
diff --git a/src/internet/model/ipv6-autoconfigured-prefix.h b/src/internet/model/ipv6-autoconfigured-prefix.h
index 169fb1910..5ecfceb36 100644
--- a/src/internet/model/ipv6-autoconfigured-prefix.h
+++ b/src/internet/model/ipv6-autoconfigured-prefix.h
@@ -29,6 +29,12 @@ class Node;
 class Ipv6AutoconfiguredPrefix : public Object
 {
   public:
+    /**
+     * @brief Get the type ID.
+     * @return the object TypeId
+     */
+    static TypeId GetTypeId();
+
     /**
      * @brief Constructor.
      * @param node node
diff --git a/src/test/traced/traced-callback-typedef-test-suite.cc b/src/test/traced/traced-callback-typedef-test-suite.cc
index e84ceae2d..6b56563b7 100644
--- a/src/test/traced/traced-callback-typedef-test-suite.cc
+++ b/src/test/traced/traced-callback-typedef-test-suite.cc
@@ -53,6 +53,16 @@ using namespace ns3;
 class TracedCallbackTypedefTestCase : public TestCase
 {
   public:
+    /// @return the TypeId for the callback checkers
+    static TypeId GetCheckerTypeId()
+    {
+        static TypeId tid = TypeId("ns3::TracedCallbackTypedefTestCaseChecker")
+                                .SetParent<Object>()
+                                .SetGroupName("Test")
+                                .HideFromDocumentation();
+        return tid;
+    }
+
     TracedCallbackTypedefTestCase();
 
     ~TracedCallbackTypedefTestCase() override
@@ -268,6 +278,12 @@ class TracedCallbackTypedefTestCase::Checker : public Object
     TracedCallback<Ts...> m_cb;
 
   public:
+    /// @return the TypeId for this checker
+    static TypeId GetTypeId()
+    {
+        return TracedCallbackTypedefTestCase::GetCheckerTypeId();
+    }
+
     Checker()
     {
     }