diff --git a/src/main/java/net/knarcraft/ffmpegconverter/utility/ListUtil.java b/src/main/java/net/knarcraft/ffmpegconverter/utility/ListUtil.java
index 6fd361a..c4fc8a6 100644
--- a/src/main/java/net/knarcraft/ffmpegconverter/utility/ListUtil.java
+++ b/src/main/java/net/knarcraft/ffmpegconverter/utility/ListUtil.java
@@ -21,7 +21,7 @@ public final class ListUtil {
      * @param <T>   <p>The type of the two lists.</p>
      * @return <p>A new array containing all elements from the two arrays.</p>
      */
-    static <T> T[] concatenate(T[] listA, T[] listB) {
+    public static <T> T[] concatenate(T[] listA, T[] listB) {
         int listALength = listA.length;
         int listBLength = listB.length;
         @SuppressWarnings("unchecked")
@@ -53,7 +53,7 @@ public final class ListUtil {
      * @param <T>       Anything which can be stored in a list
      * @return True if at least one element fulfills the predicate
      */
-    static <T> boolean listContains(T[] list, Predicate<T> predicate) {
+    public static <T> boolean listContains(T[] list, Predicate<T> predicate) {
         for (T item : list) {
             if (predicate.test(item)) {
                 return true;