diff --git a/rtgui/fattaltonemap.cc b/rtgui/fattaltonemap.cc
index a6f4c5190..5e4aa20d9 100644
--- a/rtgui/fattaltonemap.cc
+++ b/rtgui/fattaltonemap.cc
@@ -26,7 +26,7 @@ using namespace rtengine::procparams;
 
 FattalToneMapping::FattalToneMapping(): FoldableToolPanel(this, "fattal", M("TP_TM_FATTAL_LABEL"), true, true)
 {
-    amount = Gtk::manage(new Adjuster (M("TP_TM_FATTAL_AMOUNT"), 1., 100., 30., 0.0));
+    amount = Gtk::manage(new Adjuster (M("TP_TM_FATTAL_AMOUNT"), 1., 100., 1., 30.));
     threshold = Gtk::manage(new Adjuster (M("TP_TM_FATTAL_THRESHOLD"), -100., 100., 1., 0.0));
 
     amount->setAdjusterListener(this);