diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 6e7bdec4f..d9c454860 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -43,6 +43,7 @@ been tested on Linux. As of this release, the latest known version to work with
 - (wifi) Avoid firing WifiMac::DroppedMpdu trace twice in some cases
 - (wifi) Fix assignment of AIDs to non-AP STAs/MLDs to ensure they are unique
 - (wifi) Fix starting Sequence Number when ADDBA Response arrives after timeout
+- (uan) !2087 - Fix Thorp attenuation formula
 
 Release 3.42
 ------------
diff --git a/src/uan/model/uan-prop-model-thorp.cc b/src/uan/model/uan-prop-model-thorp.cc
index 167f839e0..1a2af7ce9 100644
--- a/src/uan/model/uan-prop-model-thorp.cc
+++ b/src/uan/model/uan-prop-model-thorp.cc
@@ -93,7 +93,7 @@ UanPropModelThorp::GetAttenDbKm(double freqKhz)
     }
     else
     {
-        atten = 0.002 + 0.11 * (freqKhz / (1 + freqKhz)) + 0.011 * freqKhz;
+        atten = 0.002 + 0.11 * (fsq / (1 + fsq)) + 0.011 * fsq;
     }
 
     return atten;