diff --git a/scripts/sniffer-testsuite.test b/scripts/sniffer-testsuite.test
index 6224c781b..491c1197e 100755
--- a/scripts/sniffer-testsuite.test
+++ b/scripts/sniffer-testsuite.test
@@ -8,11 +8,15 @@ echo -e "\nStaring snifftest on testsuite.pcap...\n"
 RESULT=$?
 [ $RESULT -ne 0 ] && echo -e "\nsnifftest failed\n" && exit 1
 
-echo -e "\nStaring snifftest on sniffer-ipv6.pcap...\n"
-./sslSniffer/sslSnifferTest/snifftest ./scripts/sniffer-ipv6.pcap ./certs/server-key.pem ::1 11111
 
-RESULT=$?
-[ $RESULT -ne 0 ] && echo -e "\nsnifftest (ipv6) failed\n" && exit 1
+if test $# -ne 0 && test "x$1" = "x-6";
+then
+    echo -e "\nStaring snifftest on sniffer-ipv6.pcap...\n"
+    ./sslSniffer/sslSnifferTest/snifftest ./scripts/sniffer-ipv6.pcap ./certs/server-key.pem ::1 11111
+
+    RESULT=$?
+    [ $RESULT -ne 0 ] && echo -e "\nsnifftest (ipv6) failed\n" && exit 1
+fi
 
 echo -e "\nSuccess!\n"