diff --git a/MC/config/examples/epos4/generator/NeNe_536TeV_EPOS4HQ.optns b/MC/config/examples/epos4/generator/NeNe_536TeV_EPOS4HQ.optns
index 294a581ac..a8659654a 100644
--- a/MC/config/examples/epos4/generator/NeNe_536TeV_EPOS4HQ.optns
+++ b/MC/config/examples/epos4/generator/NeNe_536TeV_EPOS4HQ.optns
@@ -20,6 +20,10 @@ nodecays
  110 20 2130 -2130 2230 -2230 1130 -1130 1330 -1330 2330 -2330 3331 -3331
 end
 
+!---EPOS4HQ specific changes---
+set hqnbcol 1
+set hqnbcolsaveEPOS 1
+-------------------------------
 set ninicon 1            !number of initial conditions used for hydro evolution
 core full                !core/corona activated
 hydro hlle               !hydro activated
diff --git a/MC/config/examples/epos4/generator/OO_536TeV_EPOS4HQ.optns b/MC/config/examples/epos4/generator/OO_536TeV_EPOS4HQ.optns
index ac4dacb34..b3d37d7e1 100644
--- a/MC/config/examples/epos4/generator/OO_536TeV_EPOS4HQ.optns
+++ b/MC/config/examples/epos4/generator/OO_536TeV_EPOS4HQ.optns
@@ -20,6 +20,10 @@ nodecays
  110 20 2130 -2130 2230 -2230 1130 -1130 1330 -1330 2330 -2330 3331 -3331
 end
 
+!---EPOS4HQ specific changes---
+set hqnbcol 1
+set hqnbcolsaveEPOS 1
+-------------------------------
 set ninicon 1            !number of initial conditions used for hydro evolution
 core full                !core/corona activated
 hydro hlle               !hydro activated