diff --git a/bin/hardening/99.2_disable_usb_devices.sh b/bin/hardening/99.2_disable_usb_devices.sh
index 4b193d5..bd9a04d 100755
--- a/bin/hardening/99.2_disable_usb_devices.sh
+++ b/bin/hardening/99.2_disable_usb_devices.sh
@@ -23,9 +23,9 @@ audit () {
     SEARCH_RES=0
     for FILE_SEARCHED in $FILES_TO_SEARCH; do
         if [ $SEARCH_RES = 1 ]; then break; fi
-        if test -d $FILE_SEARCHED; then
+        if $SUDO_CMD test -d $FILE_SEARCHED; then
             debug "$FILE_SEARCHED is a directory"
-            for file_in_dir in $(ls $FILE_SEARCHED); do
+            for file_in_dir in $( $SUDO_CMD ls $FILE_SEARCHED); do
                 does_pattern_exist_in_file "$FILE_SEARCHED/$file_in_dir" "^$PATTERN"
                 if [ $FNRET != 0 ]; then
                     debug "$PATTERN is not present in $FILE_SEARCHED/$file_in_dir"
diff --git a/tests/hardening/99.2_disable_usb_devices.sh b/tests/hardening/99.2_disable_usb_devices.sh
new file mode 100644
index 0000000..dbeda10
--- /dev/null
+++ b/tests/hardening/99.2_disable_usb_devices.sh
@@ -0,0 +1,20 @@
+# run-shellcheck
+test_audit() {
+
+    mkdir /etc/udev/rules.d
+    chmod -R 700 /etc/udev
+
+    describe Running on blank host
+    register_test retvalshouldbe 0
+    dismiss_count_for_test
+    # shellcheck disable=2154
+    run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+
+    echo 'ACTION=="add", SUBSYSTEMS=="usb", TEST=="authorized_default", ATTR{authorized_default}="0"' > /etc/udev/rules.d/10-CIS_99.2_usb_devices.sh
+
+    describe compliant
+    register_test retvalshouldbe 0
+    run compliant /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+
+    # TODO fill comprehensive tests
+}