diff --git a/PowerEditor/installer/themes/Deep Black.xml b/PowerEditor/installer/themes/Deep Black.xml
index 9c105ccf2..063c49c21 100644
--- a/PowerEditor/installer/themes/Deep Black.xml	
+++ b/PowerEditor/installer/themes/Deep Black.xml	
@@ -810,5 +810,6 @@ https://notepad-plus-plus.org/donate/
         <WidgetStyle name="URL hovered" styleID="0" fgColor="FFFFFF" />
         <WidgetStyle name="Document map" styleID="0" fgColor="FF8000" bgColor="FFFFFF" />
         <WidgetStyle name="EOL custom color" styleID="0" fgColor="808080" />
+        <WidgetStyle name="Non-printing characters custom color" styleID="0" fgColor="FF8080" />
     </GlobalStyles>
 </NotepadPlus>