diff --git a/acn/appliance.cpp b/acn/appliance.cpp
index 85d5a14..c1e47f4 100644
--- a/acn/appliance.cpp
+++ b/acn/appliance.cpp
@@ -39,7 +39,7 @@ namespace ACN {
 Appliance::Appliance(UUID::uuid cid)
   : Component(cid)
 {
-  assignUserName("libESTA ACN Appliance");
+  fctn_ = "libESTA ACN Appliance";
 
   RlpRegisterVectorHandler(SDT::SDT_PROTOCOL_ID,
                            std::bind(&Appliance::SdtReceiver, this,
diff --git a/acn/component.h b/acn/component.h
index 09d8d99..328d463 100644
--- a/acn/component.h
+++ b/acn/component.h
@@ -50,26 +50,27 @@ public:
 
   void assignUserName(const std::string s) { uacn_ = s; }
 
+protected:
+  // EPI 19: ACN Discovery on IP Networks
+  // 3. Component Name Strings
+  // Each component shall maintain two text identifier strings intended to
+  // indicate the function of the component in human readable terms for browsing
+  // purposes.
+
+    /**
+     * @brief 3.1. Fixed Component Type Name (FCTN)
+     * shall be a UTF-8 string that is assigned during manufacture.
+     */
+    std::string fctn_;
+
+    /**
+     * @brief 3.2. User Assigned Component Name (UACN)
+     * shall be a UTF-8 string that may be assigned by the user.
+     */
+    std::string uacn_;
+
 private:
   const UUID::uuid cid_;
-
-// EPI 19: ACN Discovery on IP Networks
-// 3. Component Name Strings
-// Each component shall maintain two text identifier strings intended to
-// indicate the function of the component in human readable terms for browsing
-// purposes.
-
-  /**
-   * @brief 3.1. Fixed Component Type Name (FCTN)
-   * shall be a UTF-8 string that is assigned during manufacture.
-   */
-  const std::string fctn_;
-
-  /**
-   * @brief 3.2. User Assigned Component Name (UACN)
-   * shall be a UTF-8 string that may be assigned by the user.
-   */
-  std::string uacn_;
 };
 
 }; // ACN
diff --git a/sacn/node.cpp b/sacn/node.cpp
index f73325d..e672ed4 100644
--- a/sacn/node.cpp
+++ b/sacn/node.cpp
@@ -5,7 +5,7 @@ namespace SACN {
 Node::Node(UUID::uuid cid)
     : Appliance(cid)
 {
-    assignUserName("libESTA sACN Node");
+    fctn_ = "libESTA sACN Node";
 }
 
 } // SACN
diff --git a/sacn/receiver.cpp b/sacn/receiver.cpp
index 85885a4..4de4517 100644
--- a/sacn/receiver.cpp
+++ b/sacn/receiver.cpp
@@ -35,7 +35,7 @@ namespace SACN {
 Receiver::Receiver(UUID::uuid cid)
   : Appliance(cid)
 {
-  assignUserName("libESTA sACN Receiver");
+  fctn_ = "libESTA sACN Receiver";
 
   RlpRegisterVectorHandler(VECTOR_ROOT_E131_DATA,
         std::bind(&Receiver::dataReceiver, this, std::placeholders::_1));
diff --git a/sacn/source.cpp b/sacn/source.cpp
index d723a3c..b1b9d85 100644
--- a/sacn/source.cpp
+++ b/sacn/source.cpp
@@ -32,7 +32,7 @@ namespace SACN {
 Source::Source(UUID::uuid cid)
     : Appliance(cid)
 {
-    assignUserName("libESTA sACN Source");
+    fctn_ = "libESTA sACN Source";
 }