diff --git a/src/wifi/model/wifi-information-element-vector.cc b/src/wifi/model/wifi-information-element-vector.cc
index 8081dac68..db4c70138 100644
--- a/src/wifi/model/wifi-information-element-vector.cc
+++ b/src/wifi/model/wifi-information-element-vector.cc
@@ -146,7 +146,7 @@ WifiInformationElementVector::End ()
 bool
 WifiInformationElementVector::AddInformationElement (Ptr<WifiInformationElement> element)
 {
-  if (element->GetInformationFieldSize () + 2 + GetSize () > m_maxSize)
+  if (element->GetSerializedSize () + GetSize () > m_maxSize)
     {
       return false;
     }
@@ -173,7 +173,7 @@ WifiInformationElementVector::GetSize () const
   uint32_t size = 0;
   for (IE_VECTOR::const_iterator i = m_elements.begin (); i != m_elements.end (); i++)
     {
-      size += ((*i)->GetInformationFieldSize () + 2);
+      size += (*i)->GetSerializedSize ();
     }
   return size;
 }
diff --git a/src/wifi/model/wifi-information-element.h b/src/wifi/model/wifi-information-element.h
index 795fed903..ca8099f5f 100644
--- a/src/wifi/model/wifi-information-element.h
+++ b/src/wifi/model/wifi-information-element.h
@@ -291,15 +291,6 @@ public:
    * \returns the wifi information element ID
    */
   virtual WifiInformationElementId ElementId () const = 0;
-  /**
-   * Length of serialized information (i.e., the length of the body
-   * of the IE, not including the Element ID and length octets. This
-   * is the value that will appear in the second octet of the entire
-   * IE - the length field)
-   *
-   * \return the length of serialized information
-   */
-  virtual uint8_t GetInformationFieldSize () const = 0;
 
   /**
    * Get the wifi information element ID extension
@@ -337,6 +328,15 @@ private:
    * \return an iterator
    */
   Buffer::Iterator DeserializeIfPresent (Buffer::Iterator i);
+  /**
+   * Length of serialized information (i.e., the length of the body
+   * of the IE, not including the Element ID and length octets. This
+   * is the value that will appear in the second octet of the entire
+   * IE - the length field)
+   *
+   * \return the length of serialized information
+   */
+  virtual uint8_t GetInformationFieldSize () const = 0;
   /**
    * Serialize information (i.e., the body of the IE, not including
    * the Element ID and length octets)