diff --git a/SamplesTutorial/SampleHandlerTutorial.cpp b/SamplesTutorial/SampleHandlerTutorial.cpp
index ae34495..bb57549 100755
--- a/SamplesTutorial/SampleHandlerTutorial.cpp
+++ b/SamplesTutorial/SampleHandlerTutorial.cpp
@@ -35,19 +35,19 @@ void SampleHandlerTutorial::Init() {
   MACH3LOG_INFO("-------------------------------------------------------------------");
 }
 
-void SampleHandlerTutorial::DebugShift(const double * par, std::size_t iEvent) {
+void SampleHandlerTutorial::DebugShift(const M3::float_t* par, std::size_t iEvent) {
   // HH: This is a debug function to shift the reco energy to 4 GeV if the reco energy is less than 2 GeV
   if (TutorialSamples[iEvent].RecoEnu < 2.0 && *par != 0) {
     TutorialSamples[iEvent].RecoEnu_shifted = 4;
   }
 }
 
-void SampleHandlerTutorial::EResLep(const double * par, std::size_t iEvent) {
+void SampleHandlerTutorial::EResLep(const M3::float_t* par, std::size_t iEvent) {
   // HH: Lepton energy resolution contribution to reco energy
   TutorialSamples[iEvent].RecoEnu_shifted += (*par) * TutorialSamples[iEvent].ELep;
 }
 
-void SampleHandlerTutorial::EResTot(const double * par, std::size_t iEvent) {
+void SampleHandlerTutorial::EResTot(const M3::float_t* par, std::size_t iEvent) {
   // HH: Total energy resolution contribution to reco energy
   TutorialSamples[iEvent].RecoEnu_shifted += (*par) * TutorialSamples[iEvent].RecoEnu;
 }
diff --git a/SamplesTutorial/SampleHandlerTutorial.h b/SamplesTutorial/SampleHandlerTutorial.h
index 954edf2..27d6f64 100755
--- a/SamplesTutorial/SampleHandlerTutorial.h
+++ b/SamplesTutorial/SampleHandlerTutorial.h
@@ -85,8 +85,8 @@ class SampleHandlerTutorial : public SampleHandlerFD
   void RegisterFunctionalParameters() override;
   void ResetShifts(const int iEvent) override;
 
-  void DebugShift(const double* par, std::size_t iEvent);
-  void EResLep(const double* par, std::size_t iEvent);
-  void EResTot(const double* par, std::size_t iEvent);
+  void DebugShift(const M3::float_t* par, std::size_t iEvent);
+  void EResLep(const M3::float_t* par, std::size_t iEvent);
+  void EResTot(const M3::float_t* par, std::size_t iEvent);
   // =================================
 };