diff --git a/script/test b/script/test
index add7466fa87..aebc2fd6c65 100755
--- a/script/test
+++ b/script/test
@@ -706,12 +706,10 @@ main()
             cert)
                 shift
                 do_cert "$@"
-                shift $#
                 ;;
             cert_suite)
                 shift
                 do_cert_suite "$@"
-                shift $#
                 ;;
             get_thread_wireshark)
                 do_get_thread_wireshark
diff --git a/tests/nexus/build.sh b/tests/nexus/build.sh
index 738ef2adb58..94718aa2d39 100755
--- a/tests/nexus/build.sh
+++ b/tests/nexus/build.sh
@@ -27,14 +27,6 @@
 #  POSSIBILITY OF SUCH DAMAGE.
 #
 
-display_usage()
-{
-    echo ""
-    echo "Nexus build script "
-    echo ""
-    echo ""
-}
-
 die()
 {
     echo " *** ERROR: " "$*"