diff --git a/rtgui/iccprofilecreator.cc b/rtgui/iccprofilecreator.cc
index 3f1ed4089..b7e6bc20e 100644
--- a/rtgui/iccprofilecreator.cc
+++ b/rtgui/iccprofilecreator.cc
@@ -101,17 +101,17 @@ ICCProfileCreator::ICCProfileCreator(RTWindow *rtwindow)
     Gtk::Image* gamutl5 =  Gtk::manage(new RTImage("rt-logo-small.png"));
     */
 
-    aPrimariesRedX = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_REDX"), 0.6300, 0.7350, 0.0001, 0.6400/*, gamuts0, gamutl0*/));
+    aPrimariesRedX = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_REDX"), 0.4100, 0.9000, 0.0001, 0.6400/*, gamuts0, gamutl0*/));
     setExpandAlignProperties(aPrimariesRedX, true, false, Gtk::ALIGN_FILL, Gtk::ALIGN_CENTER);
-    aPrimariesRedY = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_REDY"), 0.2650, 0.3350, 0.0001, 0.3300/*, gamutl1, gamuts1*/));
+    aPrimariesRedY = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_REDY"), 0.1000, 0.6000, 0.0001, 0.3300/*, gamutl1, gamuts1*/));
     setExpandAlignProperties(aPrimariesRedY, true, false, Gtk::ALIGN_FILL, Gtk::ALIGN_CENTER);
-    aPrimariesGreenX = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_GREX"), 0.0000, 0.3100, 0.0001, 0.3000/*, gamutl2, gamuts2*/));
+    aPrimariesGreenX = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_GREX"), -0.100, 0.4000, 0.0001, 0.3000/*, gamutl2, gamuts2*/));
     setExpandAlignProperties(aPrimariesGreenX, true, false, Gtk::ALIGN_FILL, Gtk::ALIGN_CENTER);
-    aPrimariesGreenY = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_GREY"), 0.5900, 1.0000, 0.0001, 0.6000/*, gamuts3, gamutl3*/));
+    aPrimariesGreenY = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_GREY"), 0.50, 1.0000, 0.0001, 0.6000/*, gamuts3, gamutl3*/));
     setExpandAlignProperties(aPrimariesGreenY, true, false, Gtk::ALIGN_FILL, Gtk::ALIGN_CENTER);
-    aPrimariesBlueX = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_BLUX"), 0.0001, 0.1600, 0.0001, 0.1500/*, gamutl4, gamuts4*/));
+    aPrimariesBlueX = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_BLUX"), -0.1, 0.3000, 0.0001, 0.1500/*, gamutl4, gamuts4*/));
     setExpandAlignProperties(aPrimariesBlueX, true, false, Gtk::ALIGN_FILL, Gtk::ALIGN_CENTER);
-    aPrimariesBlueY = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_BLUY"), -0.0800, 0.0700, 0.0001, 0.060/*, gamutl5, gamuts5*/));
+    aPrimariesBlueY = Gtk::manage(new Adjuster(M("ICCPROFCREATOR_PRIM_BLUY"), -0.100, 0.4000, 0.0001, 0.060/*, gamutl5, gamuts5*/));
     setExpandAlignProperties(aPrimariesBlueY, true, false, Gtk::ALIGN_FILL, Gtk::ALIGN_CENTER);
 
     primariesGrid->attach(*aPrimariesRedX,   0, 0, 1, 1);