diff --git a/src/wifi/model/minstrel-ht-wifi-manager.cc b/src/wifi/model/minstrel-ht-wifi-manager.cc
index 4b592db13..850d0f88d 100644
--- a/src/wifi/model/minstrel-ht-wifi-manager.cc
+++ b/src/wifi/model/minstrel-ht-wifi-manager.cc
@@ -923,14 +923,14 @@ MinstrelHtWifiManager::DoGetDataTxVector (WifiRemoteStation *st)
                          " Station capabilities: (" << GetNumberOfSupportedStreams (station) << "," << GetShortGuardInterval (station) << "," << GetChannelWidth (station) << ")");
         }
 
-      uint64_t dataRate = GetMcsSupported (station, mcsIndex).GetDataRate (group.chWidth, group.sgi, group.streams);
+      uint64_t dataRate = GetMcsSupported (station, mcsIndex).GetDataRate (group.chWidth, group.sgi ? 400 : 800, group.streams);
       if (!station->m_isSampling)
         {
           m_rateChange (dataRate, station->m_state->m_address);
         }
       WifiMode mode = GetMcsSupported (station, mcsIndex);
       return WifiTxVector (mode, GetDefaultTxPowerLevel (), GetLongRetryCount (station),
-                           GetPreambleForTransmission (mode, GetAddress (station)), group.sgi, GetNumberOfAntennas (), group.streams, GetNess (station), group.chWidth, GetAggregation (station) && !station->m_isSampling, GetStbc (station));
+                           GetPreambleForTransmission (mode, GetAddress (station)), group.sgi ? 400 : 800, GetNumberOfAntennas (), group.streams, GetNess (station), group.chWidth, GetAggregation (station) && !station->m_isSampling, GetStbc (station));
     }
 }
 
@@ -1006,7 +1006,7 @@ MinstrelHtWifiManager::DoGetRtsTxVector (WifiRemoteStation *st)
       NS_ASSERT (rateFound);
 
       return WifiTxVector (rtsRate, GetDefaultTxPowerLevel (), GetShortRetryCount (station), GetPreambleForTransmission (rtsRate, GetAddress (station)),
-                           false, 1, 1, 0, GetChannelWidth (station), GetAggregation (station), false);
+                           800, 1, 1, 0, GetChannelWidth (station), GetAggregation (station), false);
     }
 }