diff --git a/gtk2_ardour/processor_box.cc b/gtk2_ardour/processor_box.cc
index 3a7f000668..dd8a2e957f 100644
--- a/gtk2_ardour/processor_box.cc
+++ b/gtk2_ardour/processor_box.cc
@@ -433,7 +433,7 @@ ProcessorEntry::Control::Control (Glib::RefPtr<Gdk::Pixbuf> s, Glib::RefPtr<Gdk:
 	} else {
 		
 		_slider.set_name ("PluginSlider");
-		_slider.set_size_request (-1, 20);
+		_slider.set_size_request (-1, 16);
 		_slider.set_text (_name);
 
 //		box.pack_start (_label);