diff --git a/scripts/mixer_settings_store.lua b/scripts/mixer_settings_store.lua
index 9cfefa6869..c8e329ae5b 100644
--- a/scripts/mixer_settings_store.lua
+++ b/scripts/mixer_settings_store.lua
@@ -280,7 +280,7 @@ function factory () return function ()
 							--local _, _, pd = ARDOUR.LuaAPI.plugin_automation(proc, n)
 							local val = ARDOUR.LuaAPI.get_processor_param(proc, j, true)
 							print(r:name(), "->", proc:display_name(), label, val)
-							params[n] = val
+							params[j] = val
 						end
 						n = n + 1
 					end