diff --git a/src/SharpCompress/Archives/ArchiveFactory.cs b/src/SharpCompress/Archives/ArchiveFactory.cs
index 0089e6f1..cd0952f1 100644
--- a/src/SharpCompress/Archives/ArchiveFactory.cs
+++ b/src/SharpCompress/Archives/ArchiveFactory.cs
@@ -175,7 +175,7 @@ public static class ArchiveFactory
         return IsArchive(s, out type);
     }
 
-    private static bool IsArchive(Stream stream, out ArchiveType? type)
+    public static bool IsArchive(Stream stream, out ArchiveType? type)
     {
         type = null;
         stream.CheckNotNull(nameof(stream));