diff --git a/src/wifi/test/wifi-phy-ofdma-test.cc b/src/wifi/test/wifi-phy-ofdma-test.cc
index b704cbcdf..5ca9801ca 100644
--- a/src/wifi/test/wifi-phy-ofdma-test.cc
+++ b/src/wifi/test/wifi-phy-ofdma-test.cc
@@ -1948,7 +1948,7 @@ TestMultipleHeTbPreambles::RxHeTbPpdu (uint64_t uid, uint16_t staId, double txPo
   txVector.SetMode (HePhy::GetHeMcs7 (), staId);
   txVector.SetNss (1, staId);
 
-  m_trigVector.GetHeMuUserInfoMap ().insert ({staId, HeMuUserInfo {ru, HePhy::GetHeMcs7 (), 1}});
+  m_trigVector.SetHeMuUserInfo (staId, {ru, HePhy::GetHeMcs7 (), 1});
 
   Ptr<Packet> pkt = Create<Packet> (payloadSize);
   WifiMacHeader hdr;