diff --git a/Documentation/config.txt b/Documentation/config.txt
index ab641bf5a9..58fde4daea 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1181,7 +1181,7 @@ color.grep.<slot>::
 	filename prefix (when not using `-h`)
 `function`;;
 	function name lines (when using `-p`)
-`linenumber`;;
+`lineNumber`;;
 	line number prefix (when using `-n`)
 `match`;;
 	matching text (same as setting `matchContext` and `matchSelected`)