diff --git a/mission/controller/acs/SensorProcessing.cpp b/mission/controller/acs/SensorProcessing.cpp
index 56217a8f..975b38b1 100644
--- a/mission/controller/acs/SensorProcessing.cpp
+++ b/mission/controller/acs/SensorProcessing.cpp
@@ -1,5 +1,7 @@
 #include "SensorProcessing.h"
 
+#include <fsfw/timemanager/Stopwatch.h>
+
 SensorProcessing::SensorProcessing() {}
 
 SensorProcessing::~SensorProcessing() {}
@@ -16,12 +18,8 @@ void SensorProcessing::processMgm(const float *mgm0Value, bool mgm0valid, const
   double magIgrfModel[3] = {0.0, 0.0, 0.0};
   bool gpsValid = false;
   if (gpsDataProcessed->source.value != acs::GpsSource::NONE) {
-    Igrf13Model igrf13;
     igrf13.schmidtNormalization();
     igrf13.updateCoeffGH(timeAbsolute);
-    // ToDo
-    // maybe put a condition here, to only update after a full day, this
-    // class function has around 700 steps to perform
     igrf13.magFieldComp(gpsDataProcessed->gdLongitude.value, gpsDataProcessed->gcLatitude.value,
                         gpsDataProcessed->altitude.value, timeAbsolute, magIgrfModel);
     gpsValid = true;
diff --git a/mission/controller/acs/SensorProcessing.h b/mission/controller/acs/SensorProcessing.h
index fea0fd01..7caa29f8 100644
--- a/mission/controller/acs/SensorProcessing.h
+++ b/mission/controller/acs/SensorProcessing.h
@@ -35,6 +35,8 @@ class SensorProcessing {
   static constexpr double ZERO_VEC_D[3] = {0, 0, 0};
   static constexpr double ECCENTRICITY_WGS84 = 0.0818195;
 
+  Igrf13Model igrf13;
+
  protected:
   void processMgm(const float *mgm0Value, bool mgm0valid, const float *mgm1Value, bool mgm1valid,
                   const float *mgm2Value, bool mgm2valid, const float *mgm3Value, bool mgm3valid,