diff --git a/libraries/model/src/model/Stage.cpp b/libraries/model/src/model/Stage.cpp
index 4d75df8596..f328cb9884 100644
--- a/libraries/model/src/model/Stage.cpp
+++ b/libraries/model/src/model/Stage.cpp
@@ -45,7 +45,7 @@ Mat4d EarthSunModel::evalWorldToGeoLocationMat(double longitude, double latitude
 
 void EarthSunModel::updateWorldToSurface() const {
     // Check if the final position is too close to the earth center ?
-    float absAltitude = _earthRadius + (double)_altitude;
+    float absAltitude = _earthRadius + _altitude;
     if (absAltitude < 0.01f) {
         absAltitude = 0.01f;
     }
diff --git a/libraries/model/src/model/Stage.h b/libraries/model/src/model/Stage.h
index dfcb73418d..8575626821 100644
--- a/libraries/model/src/model/Stage.h
+++ b/libraries/model/src/model/Stage.h
@@ -72,7 +72,7 @@ public:
 
 protected:
     float  _scale = 1000.0f; //Km
-    double  _earthRadius = 6360.0;
+    float  _earthRadius = 6360.0;
 
     Quat    _surfaceOrientation;