diff --git a/Eci.cpp b/Eci.cpp
index 8085e8c..a923641 100644
--- a/Eci.cpp
+++ b/Eci.cpp
@@ -76,5 +76,5 @@ CoordGeodetic Eci::ToGeodetic() const
 
     const double alt = r / cos(lat) - kXKMPER * c;
 
-    return CoordGeodetic(lat, lon, alt);
+    return CoordGeodetic(lat, lon, alt, true);
 }