diff --git a/LArCalorimeter/LArG4/LArG4FastSimulation/src/LArFastShower.cxx b/LArCalorimeter/LArG4/LArG4FastSimulation/src/LArFastShower.cxx
index 467d4254b10cd74c05abdd8d2ae743b760071904..0678534f6ba3df99d681a4d7d64808f7b31f9025 100644
--- a/LArCalorimeter/LArG4/LArG4FastSimulation/src/LArFastShower.cxx
+++ b/LArCalorimeter/LArG4/LArG4FastSimulation/src/LArFastShower.cxx
@@ -161,7 +161,7 @@ void LArFastShower::DoIt(const G4FastTrack& fastTrack, G4FastStep& fastStep)
 #endif
 
   if ( m_generate_starting_points ) {
-    if ((float)rand()/RAND_MAX <= m_configuration.m_generated_starting_points_ratio) {
+    if ((float)rand()/static_cast<float>(RAND_MAX) <= m_configuration.m_generated_starting_points_ratio) {
       HepMC::GenEvent * ge = GetGenEvent(fastTrack);
       generateFSStartingPoint(ge);
       delete ge;
diff --git a/LArCalorimeter/LArOnlDbPrep/src/LArDSPThresholdFillInline.cxx b/LArCalorimeter/LArOnlDbPrep/src/LArDSPThresholdFillInline.cxx
index 916da12e45ae849b0383d43fa4e8cd3e074ba0f5..d1ce70d61a1bfc1d44dfaf60ad5a1d697c3eef78 100644
--- a/LArCalorimeter/LArOnlDbPrep/src/LArDSPThresholdFillInline.cxx
+++ b/LArCalorimeter/LArOnlDbPrep/src/LArDSPThresholdFillInline.cxx
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
 #include "LArOnlDbPrep/LArDSPThresholdFillInline.h"
@@ -54,8 +54,8 @@ LArDSPThresholdFillInline::LArDSPThresholdFillInline(const std::string& name, IS
   //For channel masking
   declareProperty("MaskBadChannels",m_maskBadChannels=false);
   declareProperty("BadChannelMasker",m_badChannelMasker);
-  declareProperty("MaskedtQThreshold",m_maskedtqThrsh=0x7fffffff);
-  declareProperty("MaskedsamplesThreshold",m_maskedsamplesThrsh=0x7fffffff);
+  declareProperty("MaskedtQThreshold",m_maskedtqThrsh=static_cast<float>(0x7fffffff));
+  declareProperty("MaskedsamplesThreshold",m_maskedsamplesThrsh=static_cast<float>(0x7fffffff));
 
   declareProperty("Dump",m_dump=false);
   declareProperty("OutFile",m_outFileName="out.txt");