diff --git a/gstreamer-sharp/Marshaller.cs b/gstreamer-sharp/Marshaller.cs
index da8d9a7a4c..84859b941e 100644
--- a/gstreamer-sharp/Marshaller.cs
+++ b/gstreamer-sharp/Marshaller.cs
@@ -4,7 +4,7 @@ using System.Runtime.InteropServices;
 using GLib;
 
 namespace Gst {
-	public static class Marshaller {
+	internal static class Marshaller {
 
 		public static IntPtr StringArrayToNullTermPointer (string[] strs)
 		{