diff --git a/bench.sh b/bench.sh
index 920714d..7a70f65 100644
--- a/bench.sh
+++ b/bench.sh
@@ -33,14 +33,14 @@ next() {
 
 speed_test_v4() {
     local speedtest=$(wget -4O /dev/null -T300 $1 2>&1 | awk '/\/dev\/null/ {speed=$3 $4} END {gsub(/\(|\)/,"",speed); print speed}')
-    local ipaddress=$(ping -c1 -n `awk -F'/' '{print $3}' <<< $1` | awk -F'[()]' '{print $2;exit}')
+    local ipaddress=$(ping -4 -c1 -n `awk -F'/' '{print $3}' <<< $1` | awk -F'[()]' '{print $2;exit}')
     local nodeName=$2
     printf "${YELLOW}%-32s${GREEN}%-24s${RED}%-14s${PLAIN}\n" "${nodeName}" "${ipaddress}" "${speedtest}"
 }
 
 speed_test_v6() {
     local speedtest=$(wget -6O /dev/null -T300 $1 2>&1 | awk '/\/dev\/null/ {speed=$3 $4} END {gsub(/\(|\)/,"",speed); print speed}')
-    local ipaddress=$(ping6 -c1 -n `awk -F'/' '{print $3}' <<< $1` | awk -F'[()]' '{print $2;exit}')
+    local ipaddress=$(ping -6 -c1 -n `awk -F'/' '{print $3}' <<< $1` | awk -F'[()]' '{print $2;exit}')
     local nodeName=$2
     printf "${YELLOW}%-32s${GREEN}%-24s${RED}%-14s${PLAIN}\n" "${nodeName}" "${ipaddress}" "${speedtest}"
 }