diff --git a/src/wifi/model/supported-rates.cc b/src/wifi/model/supported-rates.cc
index ed2560540..da5b5e0ea 100644
--- a/src/wifi/model/supported-rates.cc
+++ b/src/wifi/model/supported-rates.cc
@@ -71,7 +71,7 @@ SupportedRates::AddSupportedRate (uint64_t bs)
 }
 
 void
-SupportedRates::SetBasicRate (uint32_t bs)
+SupportedRates::SetBasicRate (uint64_t bs)
 {
   NS_LOG_FUNCTION (this << bs);
   NS_ASSERT_MSG (IsBssMembershipSelectorRate (bs) == false, "Invalid rate");
@@ -94,7 +94,7 @@ SupportedRates::SetBasicRate (uint32_t bs)
 }
 
 void
-SupportedRates::AddBssMembershipSelectorRate (uint32_t bs)
+SupportedRates::AddBssMembershipSelectorRate (uint64_t bs)
 {
   NS_LOG_FUNCTION (this << bs);
   if ((bs != BSS_MEMBERSHIP_SELECTOR_HT_PHY) && (bs != BSS_MEMBERSHIP_SELECTOR_VHT_PHY) && (bs != BSS_MEMBERSHIP_SELECTOR_HE_PHY))
@@ -146,7 +146,7 @@ SupportedRates::IsSupportedRate (uint64_t bs) const
 }
 
 bool
-SupportedRates::IsBssMembershipSelectorRate (uint32_t bs) const
+SupportedRates::IsBssMembershipSelectorRate (uint64_t bs) const
 {
   NS_LOG_FUNCTION (this << bs);
   if ((bs & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY
diff --git a/src/wifi/model/supported-rates.h b/src/wifi/model/supported-rates.h
index 3a5b73e12..9e1c5d790 100644
--- a/src/wifi/model/supported-rates.h
+++ b/src/wifi/model/supported-rates.h
@@ -159,14 +159,14 @@ public:
    *
    * \param bs the rate to be set
    */
-  void SetBasicRate (uint32_t bs);
+  void SetBasicRate (uint64_t bs);
   /**
    * Add a special value to the supported rate set, corresponding to
    * a BSS membership selector
    *
    * \param bs the special membership selector value (not a valid rate)
    */
-  void AddBssMembershipSelectorRate (uint32_t bs);
+  void AddBssMembershipSelectorRate (uint64_t bs);
   /**
    * Check if the given rate is supported.  The rate is encoded as it is
    * serialized to the Supported Rates Information Element (i.e. as a
@@ -196,7 +196,7 @@ public:
    *
    * \return true if the rate is a BSS membership selector, false otherwise
    */
-  bool IsBssMembershipSelectorRate (uint32_t bs) const;
+  bool IsBssMembershipSelectorRate (uint64_t bs) const;
   /**
    * Return the number of supported rates.
    *