diff --git a/src/wifi/helper/wifi-helper.cc b/src/wifi/helper/wifi-helper.cc
index ec4285353..6a1f2137c 100644
--- a/src/wifi/helper/wifi-helper.cc
+++ b/src/wifi/helper/wifi-helper.cc
@@ -765,7 +765,7 @@ WifiHelper::Install (const WifiPhyHelper &phyHelper,
           Ptr<HtConfiguration> htConfiguration = CreateObject<HtConfiguration> ();
           device->SetHtConfiguration (htConfiguration);
         }
-      if (it->second.phyStandard >= WIFI_PHY_STANDARD_80211ac)
+      if ((it->second.phyStandard >= WIFI_PHY_STANDARD_80211ac) && (it->second.phyBand != WIFI_PHY_BAND_2_4GHZ))
         {
           Ptr<VhtConfiguration> vhtConfiguration = CreateObject<VhtConfiguration> ();
           device->SetVhtConfiguration (vhtConfiguration);