diff --git a/src/main/java/org/zeroturnaround/zip/ZipUtil.java b/src/main/java/org/zeroturnaround/zip/ZipUtil.java
index 111ac85..5adfcbe 100644
--- a/src/main/java/org/zeroturnaround/zip/ZipUtil.java
+++ b/src/main/java/org/zeroturnaround/zip/ZipUtil.java
@@ -1742,7 +1742,7 @@ public static void pack(File sourceDir, OutputStream os, NameMapper mapper, int
    * @param mustHaveChildren
    *          if true, but directory to pack doesn't have any files, throw an exception.
    */
-  private static void pack(File dir, ZipOutputStream out, NameMapper mapper, String pathPrefix, boolean mustHaveChildren) throws IOException {
+  public static void pack(File dir, ZipOutputStream out, NameMapper mapper, String pathPrefix, boolean mustHaveChildren) throws IOException {
     String[] filenames = dir.list();
     if (filenames == null) {
       if (!dir.exists()) {