diff --git a/Projects/EPIC_sim_proto/EPIC.detector b/Projects/EPIC_sim_proto/EPIC.detector
index a74243cf30a7f899382395183a962a6abab33ab8..20a33b5478db790b7f0708e1062cd716c1e239b2 100644
--- a/Projects/EPIC_sim_proto/EPIC.detector
+++ b/Projects/EPIC_sim_proto/EPIC.detector
@@ -1,5 +1,5 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-FissionChamber
+FissionChamberEPIC
   POS= 0 0 0 mm
   GasMaterial= CF4
   Pressure= 1 bar