diff --git a/libs/ardour/ardour/luascripting.h b/libs/ardour/ardour/luascripting.h
index a184c4058b..7570ff1bc8 100644
--- a/libs/ardour/ardour/luascripting.h
+++ b/libs/ardour/ardour/luascripting.h
@@ -80,11 +80,12 @@ struct LIBARDOUR_API LuaScriptParam {
 				const std::string& n,
 				const std::string& t,
 				const std::string& d,
-				bool o)
+				bool o, bool p)
 			: name (n)
 			, title (t)
 			, dflt (d)
 			, optional (o)
+			, preseeded (p)
 			, is_set (false)
 			, value (d)
 	{}
@@ -93,6 +94,7 @@ struct LIBARDOUR_API LuaScriptParam {
 		std::string title;
 		std::string dflt;
 		bool optional;
+		bool preseeded;
 		bool is_set;
 		std::string value;
 };
diff --git a/libs/ardour/luascripting.cc b/libs/ardour/luascripting.cc
index a3276432b2..1193e08130 100644
--- a/libs/ardour/luascripting.cc
+++ b/libs/ardour/luascripting.cc
@@ -410,6 +410,7 @@ LuaScriptParams::script_params (LuaState& lua, const std::string& s, const std::
 				std::string title = i.value ()["title"].cast<std::string> ();
 				std::string dflt;
 				bool optional = false;
+				bool preseeded = false;
 
 				if (i.value ()["default"].isString ()) {
 					dflt = i.value ()["default"].cast<std::string> ();
@@ -417,7 +418,10 @@ LuaScriptParams::script_params (LuaState& lua, const std::string& s, const std::
 				if (i.value ()["optional"].isBoolean ()) {
 					optional = i.value ()["optional"].cast<bool> ();
 				}
-				LuaScriptParamPtr lsspp (new LuaScriptParam(name, title, dflt, optional));
+				if (i.value ()["preseeded"].isBoolean ()) {
+					preseeded = i.value ()["preseeded"].cast<bool> ();
+				}
+				LuaScriptParamPtr lsspp (new LuaScriptParam(name, title, dflt, optional, preseeded));
 				rv.push_back (lsspp);
 			}
 		}