diff --git a/src/NodaBlacklistedTerms.php b/src/NodaBlacklistedTerms.php
index 6d4ef73..d2de939 100644
--- a/src/NodaBlacklistedTerms.php
+++ b/src/NodaBlacklistedTerms.php
@@ -229,7 +229,7 @@ final class NodaBlacklistedTerms {
      */
     public static function checkActorGivenNameIsBlacklisted(string $given_name):bool {
 
-        if (in_array(trim($given_name, ' ()[]?'), self::ACTOR_GIVEN_NAMES_BLACKLIST)) return true;
+        if (in_array(trim($given_name, ' ()[]?'), self::ACTOR_GIVEN_NAMES_BLACKLIST, true)) return true;
         else return false;
 
     }