diff --git a/Steer/DigitizerWorkflow/src/SimpleDigitizerWorkflow.cxx b/Steer/DigitizerWorkflow/src/SimpleDigitizerWorkflow.cxx
index a04f73a62fbf8..b111d8f372967 100644
--- a/Steer/DigitizerWorkflow/src/SimpleDigitizerWorkflow.cxx
+++ b/Steer/DigitizerWorkflow/src/SimpleDigitizerWorkflow.cxx
@@ -309,11 +309,16 @@ void initTPC(long timestamp)
   auto& cdb = o2::tpc::CDBInterface::instance();
   cdb.setUseDefaults();
 
-  // IMPORTANT: load ParameterGEM from CCDB
+  // IMPORTANT: load ParameterGEM, ParameterGas and CalPadGainFull from CCDB to correctly init GEMAmplification
   auto& ccdbManager = o2::ccdb::BasicCCDBManager::instance();
   ccdbManager.getSpecific<o2::tpc::ParameterGEM>(o2::tpc::CDBTypeMap.at(o2::tpc::CDBType::ParGEM), timestamp);
-  LOGP(info, "initTPC: TPC GEM param updated for time {}", timestamp);
+  LOGP(info, "initTPC: TPC GEM param, Gas param + CalPadGainFull updated for time {}", timestamp);
+  ccdbManager.getSpecific<o2::tpc::CalPad>(o2::tpc::CDBTypeMap.at(o2::tpc::CDBType::CalPadGainFull), timestamp);
+  ccdbManager.getSpecific<o2::tpc::ParameterGas>(o2::tpc::CDBTypeMap.at(o2::tpc::CDBType::ParGas), timestamp);
+
   o2::tpc::ParameterGEM::Instance().printKeyValues(true, true);
+  o2::tpc::ParameterGas::Instance().printKeyValues(true, true);
+
   // by invoking this constructor we make sure that a common file will be created
   // in future we should take this from OCDB and just forward per message
   const static auto& ampl = o2::tpc::GEMAmplification::instance();