diff --git a/core/lib/GNSSCore/NeillTropModel.cpp b/core/lib/GNSSCore/NeillTropModel.cpp
index d7c528ff8..e49381f5c 100644
--- a/core/lib/GNSSCore/NeillTropModel.cpp
+++ b/core/lib/GNSSCore/NeillTropModel.cpp
@@ -570,9 +570,9 @@ namespace gpstk
       NeillDOY = static_cast<int>(ydst.doy);
       validDOY = true;
       NeillLat = rxPos.getGeodeticLatitude();
-      validHeight = true;
-      NeillLat = rxPos.getHeight();
       validLat = true;
+      NeillHeight = rxPos.getHeight();
+      validHeight = true;
 
          // Change the value of field "valid" if everything is already set
       valid = validHeight && validLat && validDOY;