diff --git a/src/wifi/model/wifi-phy.cc b/src/wifi/model/wifi-phy.cc
index b06fac1fd..9ce4a83da 100644
--- a/src/wifi/model/wifi-phy.cc
+++ b/src/wifi/model/wifi-phy.cc
@@ -1606,12 +1606,6 @@ WifiPhy::CalculatePhyPreambleAndHeaderDuration (const WifiTxVector& txVector)
   return GetStaticPhyEntity (txVector.GetModulationClass ())->CalculatePhyPreambleAndHeaderDuration (txVector);
 }
 
-Time
-WifiPhy::GetPpduFieldDuration (WifiPpduField field, const WifiTxVector& txVector)
-{
-  return GetStaticPhyEntity (txVector.GetModulationClass ())->GetDuration (field, txVector);
-}
-
 Time
 WifiPhy::CalculateTxDuration (uint32_t size, const WifiTxVector& txVector, WifiPhyBand band, uint16_t staId)
 {
diff --git a/src/wifi/model/wifi-phy.h b/src/wifi/model/wifi-phy.h
index 842bd8fb9..8a3cef1c3 100644
--- a/src/wifi/model/wifi-phy.h
+++ b/src/wifi/model/wifi-phy.h
@@ -263,16 +263,6 @@ public:
    * \return the total amount of time this PHY will stay busy for the transmission of the PHY preamble and PHY header.
    */
   static Time CalculatePhyPreambleAndHeaderDuration (const WifiTxVector& txVector);
-  /**
-   * Get the duration of the PPDU field (or group of fields)
-   * for the given transmission parameters.
-   *
-   * \param field the PPDU field (or group of fields)
-   * \param txVector the transmission parameters
-   *
-   * \return the duration of the PPDU field
-   */
-  static Time GetPpduFieldDuration (WifiPpduField field, const WifiTxVector& txVector);
   /**
    * \return the preamble detection duration, which is the time correlation needs to detect the start of an incoming frame.
    */