diff --git a/benchmarks/LGC/sim.py b/benchmarks/LGC/sim_optics.py
similarity index 94%
rename from benchmarks/LGC/sim.py
rename to benchmarks/LGC/sim_optics.py
index 8eb47dbfb4a45dc100e8aefe15cb133ef2f3b450..bec0e1658c8f3a2d61297fe9232519b4eef42743 100644
--- a/benchmarks/LGC/sim.py
+++ b/benchmarks/LGC/sim_optics.py
@@ -5,9 +5,9 @@ Based on M. Frank and F. Gaede runSim.py
 Modified with settings for SoLID simulation
 
 [simulation]:
-    python benchmarks/LGC/sim.py --compactFile solid.xml --runType batch
+    python benchmarks/LGC/sim_optics.py --compactFile solid.xml --runType batch
 [visualization]:
-    python benchmarks/LGC/sim.py --compactFile solid.xml --runType qt --macro macro/vis.mac
+    python benchmarks/LGC/sim_optics.py --compactFile solid.xml --runType qt --macro macro/vis.mac
 """
 from __future__ import absolute_import, unicode_literals
 import logging