diff --git a/libs/surfaces/osc/osc_select_observer.cc b/libs/surfaces/osc/osc_select_observer.cc
index bcea1c078b..9473897820 100644
--- a/libs/surfaces/osc/osc_select_observer.cc
+++ b/libs/surfaces/osc/osc_select_observer.cc
@@ -484,7 +484,7 @@ OSCSelectObserver::gain_message (string path, boost::shared_ptr<Controllable> co
 
 	if (gainmode) {
 		lo_message_add_float (msg, gain_to_slider_position (controllable->get_value()));
-		text_message ("/select/name", to_string (accurate_coefficient_to_dB (controllable->get_value())));
+		text_message ("/select/name", to_string (accurate_coefficient_to_dB (controllable->get_value()), std::dec));
 		gain_timeout = 8;
 	} else {
 		if (controllable->get_value() < 1e-15) {
@@ -522,7 +522,7 @@ OSCSelectObserver::send_gain (uint32_t id, boost::shared_ptr<PBD::Controllable>
 #else
 		value = gain_to_slider_position (controllable->get_value());
 #endif
-	text_with_id ("/select/send_name" , id + 1, to_string (db));
+	text_with_id ("/select/send_name" , id + 1, to_string (db, std::dec));
 	if (send_timeout.size() > id) {
 		send_timeout[id] = 8;
 	}