diff --git a/rtdata/languages/default b/rtdata/languages/default
index d4b1fb41e..b58bf2284 100644
--- a/rtdata/languages/default
+++ b/rtdata/languages/default
@@ -2246,7 +2246,7 @@ TP_LOCALLAB_FATAMOUNT;Amount
 TP_LOCALLAB_FATDETAIL;Detail
 TP_LOCALLAB_FATANCHOR;Anchor
 TP_LOCALLAB_FATLEVEL;Detail levels
-TP_LOCALLAB_GAMFRA;Tone response curve
+TP_LOCALLAB_GAMFRA;Tone response curve (TRC)
 TP_LOCALLAB_GAMSH;Gamma
 TP_LOCALLAB_SLOSH;Slope
 TP_LOCALLAB_QUAL_METHOD;Global quality
@@ -2349,7 +2349,7 @@ TP_LOCALLAB_SHOWMODIFMASK;Show modifications whith mask
 TP_LOCALLAB_SHOWMASK;Show mask
 TP_LOCALLAB_SHOWSTRUC;Show structure
 TP_LOCALLAB_USEMASK;Use mask
-TP_LOCALLAB_SHADHIGH;Shadows Highlights - Gradient - Tone Equalizer
+TP_LOCALLAB_SHADHIGH;Shadows Highlights-Gradient- Tone Equalizer-TRC
 TP_LOCALLAB_SOFTRADIUSCOL;Soft radius
 TP_LOCALLAB_SOFT;Soft Light and Original Retinex
 TP_LOCALLAB_SOFTMETHOD_TOOLTIP;Original Retinex is very different from others Retinex method.\nIts acts on grey and balance luminance.
diff --git a/rtgui/locallab.cc b/rtgui/locallab.cc
index fa62ae8c0..52ee01348 100644
--- a/rtgui/locallab.cc
+++ b/rtgui/locallab.cc
@@ -248,8 +248,8 @@ Locallab::Locallab():
     detailSH(Gtk::manage(new Adjuster(M("TP_LOCALLAB_DETAILSH"), -5, 5, 1, 0))),
     fatamountSH(Gtk::manage(new Adjuster(M("TP_LOCALLAB_FATAMOUNT"), 1., 100., 1., 1.))),
     fatanchorSH(Gtk::manage(new Adjuster(M("TP_LOCALLAB_FATANCHOR"), 1., 100., 1., 50., Gtk::manage(new RTImage("circle-black-small.png")), Gtk::manage(new RTImage("circle-white-small.png"))))),
-    gamSH(Gtk::manage(new Adjuster(M("TP_LOCALLAB_GAMSH"), 0.25, 5.0, 0.01, 2.4))),
-    sloSH(Gtk::manage(new Adjuster(M("TP_LOCALLAB_SLOSH"), 0.0, 20.0, 0.01, 12.92))),
+    gamSH(Gtk::manage(new Adjuster(M("TP_LOCALLAB_GAMSH"), 0.25, 8.0, 0.01, 2.4))),
+    sloSH(Gtk::manage(new Adjuster(M("TP_LOCALLAB_SLOSH"), 0.0, 30.0, 0.01, 12.92))),
     // Vibrance
     saturated(Gtk::manage(new Adjuster(M("TP_VIBRANCE_SATURATED"), -100., 100., 1., 0.))),
     pastels(Gtk::manage(new Adjuster(M("TP_VIBRANCE_PASTELS"), -100., 100., 1., 0.))),