diff --git a/src/G4System.cc b/src/G4System.cc
index b5ba6ad..972ebf0 100644
--- a/src/G4System.cc
+++ b/src/G4System.cc
@@ -54,6 +54,7 @@ void G4System::run_visualize(const std::string& partSpecies, double minEnergy, d
   std::vector<G4String> commands={
      "/vis/open DAWNFILE",
      "/vis/drawVolume",
+     "/vis/viewer/set/viewpointThetaPhi -90 0",
      "/vis/modeling/trajectories/create/drawByParticleID",
      "/vis/modeling/trajectories/drawByParticleID-0/set gamma green",
      "/vis/modeling/trajectories/drawByParticleID-0/set e- blue",