diff --git a/man/man1/fzf.1 b/man/man1/fzf.1
index 456006d6..9fa19f48 100644
--- a/man/man1/fzf.1
+++ b/man/man1/fzf.1
@@ -1195,6 +1195,8 @@ fzf exports the following environment variables to its child processes.
 .br
 .BR FZF_QUERY "           Current query string"
 .br
+.BR FZF_NTH "             Current \-\-nth option"
+.br
 .BR FZF_PROMPT "          Prompt string"
 .br
 .BR FZF_PREVIEW_LABEL "   Preview label string"