diff --git a/etc/permission-hardening.d/30_default.conf b/etc/permission-hardening.d/30_default.conf
index a70b6e5..fa77fdc 100644
--- a/etc/permission-hardening.d/30_default.conf
+++ b/etc/permission-hardening.d/30_default.conf
@@ -14,6 +14,7 @@
 ## argument.
 
 ## SUID whitelist.
+## TODO: white spaces inside file name untested
 /usr/bin/sudo whitelist
 /bin/sudo whitelist
 /usr/bin/bwrap whitelist
diff --git a/usr/lib/security-misc/permission-hardening b/usr/lib/security-misc/permission-hardening
index b2500dc..a58ffdf 100755
--- a/usr/lib/security-misc/permission-hardening
+++ b/usr/lib/security-misc/permission-hardening
@@ -176,6 +176,7 @@ set_file_perms() {
     fso_without_trailing_slash="${fso%/}"
 
     if [ "$mode_from_config" = "whitelist" ]; then
+      ## TODO: test/add white spaces inside file name support
       whitelist+="$fso_without_trailing_slash "
       continue
     fi