diff --git a/rtdata/languages/English (US) b/rtdata/languages/English (US)
index d8c497f16..1bd319e6f 100644
--- a/rtdata/languages/English (US)	
+++ b/rtdata/languages/English (US)	
@@ -937,7 +937,7 @@
 !MAIN_TOOLTIP_BACKCOLOR0;Background color of the preview: <b>theme-based</b>\nShortcut: <b>9</b>
 !MAIN_TOOLTIP_BACKCOLOR1;Background color of the preview: <b>black</b>\nShortcut: <b>9</b>
 !MAIN_TOOLTIP_BACKCOLOR2;Background color of the preview: <b>white</b>\nShortcut: <b>9</b>
-!MAIN_TOOLTIP_BACKCOLOR3;Background color of the preview: <b>middle grey</b>\nShortcut: <b>9</b>
+!MAIN_TOOLTIP_BACKCOLOR3;Background color of the preview: <b>middle gray</b>\nShortcut: <b>9</b>
 !MAIN_TOOLTIP_BEFOREAFTERLOCK;<b>Lock</b> / <b>Unlock</b> the <b>Before</b> view\n\n<b>Lock</b>: keep the <b>Before</b> view unchanged.\nUseful to evaluate the cumulative effect of multiple tools.\nAdditionally, comparisons can be made to any state in the History.\n\n<b>Unlock</b>: the <b>Before</b> view will follow the <b>After</b> view one step behind, showing the image before the effect of the currently used tool.
 !MAIN_TOOLTIP_HIDEHP;Show/Hide the left panel (including the history).\nShortcut: <b>l</b>
 !MAIN_TOOLTIP_INDCLIPPEDH;Clipped highlight indication.\nShortcut: <b>&gt;</b>
@@ -2097,7 +2097,7 @@
 !TP_WAVELET_APPLYTO;Apply To
 !TP_WAVELET_AVOID;Avoid color shift
 !TP_WAVELET_B0;Black
-!TP_WAVELET_B1;Grey
+!TP_WAVELET_B1;Gray
 !TP_WAVELET_B2;Residual
 !TP_WAVELET_BACKGROUND;Background
 !TP_WAVELET_BACUR;Curve