doc: Describe the optional 'stats' parameter
diff --git a/src/e1_input_vty.c b/src/e1_input_vty.c
index 02676e2..cca7e8f 100644
--- a/src/e1_input_vty.c
+++ b/src/e1_input_vty.c
@@ -175,7 +175,7 @@
       show_e1line_cmd,
       "show e1_line [line_nr] [stats]",
 	SHOW_STR "Display information about a E1 line\n"
-	"E1 Line Number\n")
+	"E1 Line Number\n" "Include statistics\n")
 {
 	struct e1inp_line *line;
 	int stats = 0;