diff --git a/rtgui/locallab.cc b/rtgui/locallab.cc
index c91cc16f9..8ad61d667 100644
--- a/rtgui/locallab.cc
+++ b/rtgui/locallab.cc
@@ -263,7 +263,7 @@ Locallab::Locallab():
     shadmaskcol(Gtk::manage(new Adjuster(M("TP_LOCALLAB_SHAMASKCOL"), 0, 100, 1, 0))),
     softradiuscol(Gtk::manage(new Adjuster(M("TP_LOCALLAB_SOFTRADIUSCOL"), 0.0, 100.0, 0.5, 0.))),
     opacol(Gtk::manage(new Adjuster(M("TP_LOCALLAB_OPACOL"), 0.0, 100.0, 0.5, 100.))),
-    conthrcol(Gtk::manage(new Adjuster(M("TP_LOCALLAB_CONTTHR"), 0.0, 100.0, 0.5, 100.))),
+    conthrcol(Gtk::manage(new Adjuster(M("TP_LOCALLAB_CONTTHR"), 0.0, 100.0, 0.5, 0.))),
     // Exposure
     expcomp(Gtk::manage(new Adjuster(M("TP_EXPOSURE_EXPCOMP"), -2.0, 4.0, 0.05, 0.0))),
     hlcompr(Gtk::manage(new Adjuster(M("TP_EXPOSURE_COMPRHIGHLIGHTS"), 0, 500, 1, 0))),