diff --git a/scripts/tests_all.sh b/scripts/tests_all.sh
index e4459de45..c822d4101 100755
--- a/scripts/tests_all.sh
+++ b/scripts/tests_all.sh
@@ -37,7 +37,7 @@ fi
 sleep 1
 
 # Crypto test
-$BUTTERFLY_ROOT/scripts/tests_crypto.sh $BUTTERFLY_BUILD_ROOT/build
+$BUTTERFLY_ROOT/scripts/tests_crypto.sh $BUTTERFLY_BUILD_ROOT
 if [ $? != 0 ]; then
     tput setaf 1
     echo "crypto test failed"
diff --git a/tests/61_bench_nic_1BT/test.sh b/tests/61_bench_nic_1BT/test.sh
index 874cb9103..db8829939 100755
--- a/tests/61_bench_nic_1BT/test.sh
+++ b/tests/61_bench_nic_1BT/test.sh
@@ -9,6 +9,7 @@
 
 BUTTERFLY_BUILD_ROOT=$1
 BUTTERFLY_SRC_ROOT=$(cd "$(dirname $0)/../.." && pwd)
+
 source $BUTTERFLY_SRC_ROOT/tests/functions.sh
 
 network_connect 0 1
@@ -21,8 +22,10 @@ bench_lat_snd_add 0 1 2 42 sg-1
 
 sleep 0.5
 
+server_stop 0
 network_disconnect 0 1
 
-server_stop 0
+check_bench_ping 3 5
 
 return_result
+
diff --git a/tests/62_bench_nic_2BT/test.sh b/tests/62_bench_nic_2BT/test.sh
index 05d452bd5..93d381267 100755
--- a/tests/62_bench_nic_2BT/test.sh
+++ b/tests/62_bench_nic_2BT/test.sh
@@ -25,4 +25,6 @@ network_disconnect 0 1
 server_stop 0
 server_stop 1
 
+check_bench_ping 32000 45000
+
 return_result
diff --git a/tests/functions.sh b/tests/functions.sh
index 3ef990b4e..3b4897897 100755
--- a/tests/functions.sh
+++ b/tests/functions.sh
@@ -21,7 +21,7 @@ RETURN_CODE=0
 function return_result {
     clean_all
     if [ $RETURN_CODE == 0 ]; then
-        echo $CUR_TEST 'SUCESS !!!'
+        echo $CUR_TEST 'SUCCESS !!!'
     else
         echo $CUR_TEST 'FAIL !!!'
     fi
@@ -1502,6 +1502,27 @@ function fail {
     exit 1
 }
 
+#Use: check_bench_ping [maximum average delay all bursts] [maximum average delay one burst]
+function check_bench_ping {
+    tmp_ping_file="/tmp/butterfly_bench_ping"
+    sed -n -e '/^ping/p' $BUTTERFLY_BUILD_ROOT/butterflyd_0_output > $tmp_ping_file
+    max_average_ping_time="$(awk '{ ($9 > max) ? max = $9 : max = max }END {printf max}' ${tmp_ping_file})"
+    average_ping_time="$(awk '{ total += $9; i+=1 }END {printf total/i}' ${tmp_ping_file})"
+    rm ${tmp_ping_file}
+    if [ -z $average_ping_time ]; then
+        echo "[Error]: bench: no successfull ping."
+        RETURN_CODE=1
+    elif (( $(echo "$max_average_ping_time > $2" | bc -l) )); then
+        echo "[Error]: bench: at least one burst have an average ping time to big."
+        RETURN_CODE=1
+    elif (( $(echo "$average_ping_time > $1" | bc -l) )); then
+        echo "[Error]: bench: average ping time to big."
+        RETURN_CODE=1
+    else
+        echo "[Info]: bench: ping test ok."
+    fi
+}
+
 if [ "$BUTTERFLY_BUILD_ROOT" = "-h" ] || [ "$BUTTERFLY_BUILD_ROOT" = "--help" ] ||
        [ "$BUTTERFLY_SRC_ROOT" = "-h" ] || [ "$BUTTERFLY_SRC_ROOT" = "--help" ] ; then
     usage