diff --git a/src/programs/Simulation/gen_amp_V2/gen_amp_v2.cc b/src/programs/Simulation/gen_amp_V2/gen_amp_v2.cc
index d4b59e8a7..ad73e71cf 100644
--- a/src/programs/Simulation/gen_amp_V2/gen_amp_v2.cc
+++ b/src/programs/Simulation/gen_amp_V2/gen_amp_v2.cc
@@ -369,7 +369,7 @@ int main( int argc, char* argv[] ){
   // particle, which is typically the first in the list in GlueX reaction definitions
   DataWriter* rootOut = ( fsRootFormat ?
 			  static_cast< DataWriter*>( new FSRootDataWriter( reaction->particleList().size()-1, outName ) ) :
-			  static_cast< DataWriter* >( new ROOTDataWriter( outName ) ) );
+			  static_cast< DataWriter* >( new ROOTDataWriter( outName, "kin", true, true ) ) );
 
   TFile* diagOut = new TFile( "gen_amp_diagnostic.root", "recreate" );