diff --git a/rtdata/languages/default b/rtdata/languages/default
index c420bf74a..842e4e534 100644
--- a/rtdata/languages/default
+++ b/rtdata/languages/default
@@ -790,6 +790,7 @@ HISTORY_MSG_542;Local - curve method
 HISTORY_MSG_543;Local - hueref
 HISTORY_MSG_544;Local - chromaref
 HISTORY_MSG_545;Local - lumaref
+HISTORY_MSG_546;Local - H curve
 HISTORY_MSG_547;Local - Vibrance
 HISTORY_MSG_548;Local - Vib H curve
 HISTORY_MSG_550;Local - Vib avoid colorshift
@@ -805,6 +806,7 @@ HISTORY_MSG_559;Local - Exp hlcomprthresh
 HISTORY_MSG_560;Local - Exp black
 HISTORY_MSG_561;Local - Exp Shcompr
 HISTORY_MSG_562;Local - Exp Scope
+HISTORY_MSG_563;Local - Exp Contrast curve
 HISTORY_NEWSNAPSHOT;Add
 HISTORY_NEWSNAPSHOT_TOOLTIP;Shortcut: <b>Alt-s</b>
 HISTORY_SNAPSHOT;Snapshot
diff --git a/rtgui/locallab.cc b/rtgui/locallab.cc
index fc81906bc..d53d2e2b9 100644
--- a/rtgui/locallab.cc
+++ b/rtgui/locallab.cc
@@ -2901,7 +2901,7 @@ void Locallab::curveChanged (CurveEditor* ce)
 
             adjusterChanged (retrab, strval);
         } else if (ce == HHshape) {
-            listener->panelChanged (EvlocallabHHshape, M (""));
+            listener->panelChanged (EvlocallabHHshape, M ("HISTORY_CUSTOMCURVE"));
             int strval = retrab->getValue();
             //update MIP
             retrab->setValue (strval + 1);
@@ -2909,7 +2909,7 @@ void Locallab::curveChanged (CurveEditor* ce)
             usleep (10000); //to test
             retrab->setValue (strval);
         } else if (ce == shape) {
-            listener->panelChanged (Evlocallabshape, M (""));
+            listener->panelChanged (Evlocallabshape, M ("HISTORY_CUSTOMCURVE"));
             int strval = retrab->getValue();
             //update MIP
             retrab->setValue (strval + 1);