diff --git a/doc_src/index.hdr.in b/doc_src/index.hdr.in
index 707944d2f..ac4441629 100644
--- a/doc_src/index.hdr.in
+++ b/doc_src/index.hdr.in
@@ -931,6 +931,8 @@ The following variables are available to change the highlighting colors in fish:
 
 - `fish_color_match`, the color used to highlight matching parenthesis
 
+- `fish_color_selection`, the color used when selecting text (in vi visual mode)
+
 - `fish_color_search_match`, the color used to highlight history search matches
 
 - `fish_color_operator`, the color for parameter expansion operators like '*' and '~'