diff --git a/benchmarks/synchrotron/synchrotron.sh b/benchmarks/synchrotron/synchrotron.sh
index fe1769dc1bccd650709a91944b38b13b2369be51..e4c112d4373139c37878059469fba3f9196eaf04 100644
--- a/benchmarks/synchrotron/synchrotron.sh
+++ b/benchmarks/synchrotron/synchrotron.sh
@@ -90,7 +90,7 @@ echo "JUGGLER_DETECTOR    = ${JUGGLER_DETECTOR}"
 ## Step 1. Get the data
 if [[ -n "${DATA_INIT}" || -n "${DO_ALL}" ]] ; then
   mc -C . config host add S3 https://dtn01.sdcc.bnl.gov:9000 $S3_ACCESS_KEY $S3_SECRET_KEY
-  mc -C . head -n 1000 --insecure ${DATA_URL} > ${JUGGLER_MC_FILE}
+  mc -C . head -n $((2+5*${JUGGLER_N_EVENTS})) --insecure ${DATA_URL} > ${JUGGLER_MC_FILE}
   if [[ "$?" -ne "0" ]] ; then
     echo "Failed to download hepmc files"
     exit 1