diff --git a/configure.ac b/configure.ac
index 130a35856..7917e3cad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -283,6 +283,10 @@ AC_ARG_ENABLE(pip,
 	AS_HELP_STRING([--enable-pip], [enable picture in picture support @<:@default=no@:>@]),
 	AC_DEFINE(ENABLE_PIP, 1, [enable picture in picture support]))
 
+AC_ARG_ENABLE(dynamicdemux,
+	AS_HELP_STRING([--enable-dynamicdemux], [enable dynamic demux @<:@default=no@:>@]),
+	AC_DEFINE(DYNAMIC_DEMUX, 1, [enable dynamic demux]))
+
 AC_ARG_ENABLE(testing,
 	AS_HELP_STRING([--enable-testing], [enable development code @<:@default=no@:>@]),
 	AC_DEFINE(ENABLE_TESTING, 1, [enable development code]))