diff --git a/demo/crypto-perf/run-dpdk-test b/demo/crypto-perf/run-dpdk-test
index e962d0e2..ae4d27ef 100755
--- a/demo/crypto-perf/run-dpdk-test
+++ b/demo/crypto-perf/run-dpdk-test
@@ -10,10 +10,10 @@ fi
 
 PCI_ALLOWLIST=""
 
-for i in `echo ${!QAT*}`; do PCI_ALLOWLIST="$PCI_ALLOWLIST -a ${!i}"; done
+for i in ${!QAT*}; do PCI_ALLOWLIST="$PCI_ALLOWLIST -a ${!i}"; done
 
 LCORE=$(cat /sys/fs/cgroup/cpuset/cpuset.cpus)
 
 EAL="--no-telemetry -l ${LCORE} ${PCI_ALLOWLIST}"
 
-dpdk-test-${TESTCMD}-perf ${EAL} -- ${PTEST} \
+dpdk-test-"${TESTCMD}"-perf ${EAL} -- ${PTEST} \