diff --git a/src/wifi/model/interference-helper.cc b/src/wifi/model/interference-helper.cc
index deb022166..d71e98c63 100644
--- a/src/wifi/model/interference-helper.cc
+++ b/src/wifi/model/interference-helper.cc
@@ -344,23 +344,22 @@ InterferenceHelper::CalculatePlcpHeaderPer (Ptr<const InterferenceHelper::Event>
   double psr = 1.0; /* Packet Success Rate */
   NiChanges::iterator j = ni->begin ();
   Time previous = (*j).GetTime ();
-  WifiMode payloadMode = event->GetPayloadMode ();
   WifiPreamble preamble = event->GetTxVector ().GetPreambleType ();
   WifiMode mcsHeaderMode;
   if (preamble == WIFI_PREAMBLE_HT_MF || preamble == WIFI_PREAMBLE_HT_GF)
     {
       //mode for PLCP header fields sent with HT modulation
-      mcsHeaderMode = WifiPhy::GetHtPlcpHeaderMode (payloadMode);
+      mcsHeaderMode = WifiPhy::GetHtPlcpHeaderMode ();
     }
   else if (preamble == WIFI_PREAMBLE_VHT)
     {
       //mode for PLCP header fields sent with VHT modulation
-      mcsHeaderMode = WifiPhy::GetVhtPlcpHeaderMode (payloadMode);
+      mcsHeaderMode = WifiPhy::GetVhtPlcpHeaderMode ();
     }
   else if (preamble == WIFI_PREAMBLE_HE_SU)
     {
       //mode for PLCP header fields sent with HE modulation
-      mcsHeaderMode = WifiPhy::GetHePlcpHeaderMode (payloadMode);
+      mcsHeaderMode = WifiPhy::GetHePlcpHeaderMode ();
     }
   WifiMode headerMode = WifiPhy::GetPlcpHeaderMode (event->GetTxVector ());
   Time plcpHeaderStart = (*j).GetTime () + WifiPhy::GetPlcpPreambleDuration (event->GetTxVector ()); //packet start time + preamble
diff --git a/src/wifi/model/wifi-phy.cc b/src/wifi/model/wifi-phy.cc
index 679bc4ae3..8f7ed5149 100644
--- a/src/wifi/model/wifi-phy.cc
+++ b/src/wifi/model/wifi-phy.cc
@@ -1645,19 +1645,19 @@ WifiPhy::ResumeFromSleep (void)
 }
 
 WifiMode
-WifiPhy::GetHtPlcpHeaderMode (WifiMode payloadMode)
+WifiPhy::GetHtPlcpHeaderMode ()
 {
   return WifiPhy::GetHtMcs0 ();
 }
 
 WifiMode
-WifiPhy::GetVhtPlcpHeaderMode (WifiMode payloadMode)
+WifiPhy::GetVhtPlcpHeaderMode ()
 {
   return WifiPhy::GetVhtMcs0 ();
 }
 
 WifiMode
-WifiPhy::GetHePlcpHeaderMode (WifiMode payloadMode)
+WifiPhy::GetHePlcpHeaderMode ()
 {
   return WifiPhy::GetHeMcs0 ();
 }
diff --git a/src/wifi/model/wifi-phy.h b/src/wifi/model/wifi-phy.h
index 48200d082..383ab83a3 100644
--- a/src/wifi/model/wifi-phy.h
+++ b/src/wifi/model/wifi-phy.h
@@ -380,24 +380,18 @@ public:
    */
   static Time GetPlcpTrainingSymbolDuration (WifiTxVector txVector);
   /**
-   * \param payloadMode the WifiMode use for the transmission of the payload
-   *
    * \return the WifiMode used for the transmission of the HT-SIG and the HT training fields
    *         in Mixed Format and greenfield format PLCP header
    */
-  static WifiMode GetHtPlcpHeaderMode (WifiMode payloadMode);
+  static WifiMode GetHtPlcpHeaderMode ();
   /**
-   * \param payloadMode the WifiMode use for the transmission of the payload
-   *
    * \return the WifiMode used for the transmission of the VHT-STF, VHT-LTF and VHT-SIG-B fields
    */
-  static WifiMode GetVhtPlcpHeaderMode (WifiMode payloadMode);
+  static WifiMode GetVhtPlcpHeaderMode ();
   /**
-   * \param payloadMode the WifiMode use for the transmission of the payload
-   *
    * \return the WifiMode used for the transmission of the HE-STF, HE-LTF and HE-SIG-B fields
    */
-  static WifiMode GetHePlcpHeaderMode (WifiMode payloadMode);
+  static WifiMode GetHePlcpHeaderMode ();
   /**
    * \param preamble the type of preamble
    *