diff --git a/libs/surfaces/mackie/strip.cc b/libs/surfaces/mackie/strip.cc
index 6cc733b76f..8767e244d7 100644
--- a/libs/surfaces/mackie/strip.cc
+++ b/libs/surfaces/mackie/strip.cc
@@ -532,7 +532,7 @@ Strip::notify_send_level_change (AutomationType type, uint32_t send_num, bool fo
 
 	if (control) {
 		float val = control->get_value();
-		queue_parameter_display (type, val);
+		queue_parameter_display (type, control->internal_to_interface (val));
 		/* update pot/encoder */
 		_surface->write (_vpot->set (control->internal_to_interface (val), true, Pot::wrap));
 	}