diff --git a/rtdata/languages/default b/rtdata/languages/default
index 69b7449e3..30d86c097 100644
--- a/rtdata/languages/default
+++ b/rtdata/languages/default
@@ -2321,6 +2321,7 @@ TP_WAVELET_SOFTRAD;Soft Radius
 TP_WAVELET_STREN;Strength
 TP_WAVELET_STRENGTH;Strength
 TP_WAVELET_SUPE;Extra
+TP_WAVELET_THR;Shadows threshold
 TP_WAVELET_THRESHOLD;Finer levels
 TP_WAVELET_THRESHOLD2;Coarser levels
 //TP_WAVELET_THRESHOLD2_TOOLTIP;Only levels between 9 and 9 minus the value will be affected by the shadow luminance range. Other levels will be fully treated. The highest level possible is limited by the highlight level value (9 minus highlight level value).