diff --git a/src/wifi/model/spectrum-wifi-phy.cc b/src/wifi/model/spectrum-wifi-phy.cc
index 6f52b6c47..70e94ba24 100644
--- a/src/wifi/model/spectrum-wifi-phy.cc
+++ b/src/wifi/model/spectrum-wifi-phy.cc
@@ -314,17 +314,17 @@ SpectrumWifiPhy::GetTxPowerSpectralDensity (uint16_t centerFrequency, uint16_t c
   return v;
 }
 
-uint32_t
+uint16_t
 SpectrumWifiPhy::GetCenterFrequencyForChannelWidth (WifiTxVector txVector) const
 {
   NS_LOG_FUNCTION (this << txVector);
-  uint32_t centerFrequencyForSupportedWidth = GetFrequency ();
+  uint16_t centerFrequencyForSupportedWidth = GetFrequency ();
   uint16_t supportedWidth = GetChannelWidth ();
   uint16_t currentWidth = txVector.GetChannelWidth ();
   if (currentWidth != supportedWidth)
     {
-      uint32_t startingFrequency = centerFrequencyForSupportedWidth - static_cast<uint32_t> (supportedWidth / 2);
-      return startingFrequency + static_cast<uint32_t> (currentWidth / 2); // primary channel is in the lower part (for the time being)
+      uint16_t startingFrequency = centerFrequencyForSupportedWidth - (supportedWidth / 2);
+      return startingFrequency + (currentWidth / 2); // primary channel is in the lower part (for the time being)
     }
   return centerFrequencyForSupportedWidth;
 }
diff --git a/src/wifi/model/spectrum-wifi-phy.h b/src/wifi/model/spectrum-wifi-phy.h
index 36ad6bfdb..1dcebf56c 100644
--- a/src/wifi/model/spectrum-wifi-phy.h
+++ b/src/wifi/model/spectrum-wifi-phy.h
@@ -109,7 +109,7 @@ public:
    * \param txVector the TXVECTOR that has the channel width that is to be used
    * \return the center frequency corresponding to the channel width to be used
    */
-  uint32_t GetCenterFrequencyForChannelWidth (WifiTxVector txVector) const;
+  uint16_t GetCenterFrequencyForChannelWidth (WifiTxVector txVector) const;
 
   /**
    * Method to encapsulate the creation of the WifiSpectrumPhyInterface