diff --git a/trackers/roman_pot_simu.sh b/trackers/roman_pot_simu.sh
index c10ac633f8e131ca1ba7b12367996ac803715ad5..7f15f490dcdcaf8694db65736c28304c8c728a44 100755
--- a/trackers/roman_pot_simu.sh
+++ b/trackers/roman_pot_simu.sh
@@ -3,6 +3,6 @@
 source /usr/local/bin/thisdd4hep.sh
 
 ddsim --runType batch -N 300 \
-	--inputFiles ../data/forward_ions.hepmc \
-	--compactFile ./roman_pot.xml \
-	--outputFile ../sim_output/roman_pot_out.root
+	--inputFiles ./data/forward_ions.hepmc \
+	--compactFile ./trackers/roman_pot.xml \
+	--outputFile ./sim_output/roman_pot_out.root