diff --git a/share/scripts/scl_to_mts.lua b/share/scripts/scl_to_mts.lua
index 6ead92ddad..0a9de40072 100644
--- a/share/scripts/scl_to_mts.lua
+++ b/share/scripts/scl_to_mts.lua
@@ -291,6 +291,10 @@ function factory () return function ()
 	-- hide modal progress dialog and destroy it
 	pdialog:done ();
 
+	tx = nil
+	parser = nil
+	collectgarbage () -- and release any references
+
 	--dump:close ()
 
 end end