diff --git a/gtk2_ardour/generic_pluginui.cc b/gtk2_ardour/generic_pluginui.cc
index 5e14ecf034..bef4227e27 100644
--- a/gtk2_ardour/generic_pluginui.cc
+++ b/gtk2_ardour/generic_pluginui.cc
@@ -515,6 +515,7 @@ GenericPluginUI::build_control_ui (guint32 port_index, boost::shared_ptr<Automat
 			control_ui->controller->set_name (X_("PluginSlider"));
 			control_ui->controller->set_style (BarController::LeftToRight);
 			control_ui->controller->set_use_parent (true);
+                        control_ui->controller->set_logarithmic (control_ui->logarithmic);
 
 			control_ui->controller->StartGesture.connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::start_touch), control_ui));
 			control_ui->controller->StopGesture.connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::stop_touch), control_ui));