diff --git a/doc/bird.sgml b/doc/bird.sgml
index ebafcf92..c725081a 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -1348,7 +1348,7 @@ foot).
 
 	<cf><m/P/.len</cf> returns the length of path <m/P/.
 
-	<cf><m/P/.empty()</cf> makes the path <m/P/ empty.
+	<cf><m/P/.empty</cf> makes the path <m/P/ empty.
 
 	<cf>prepend(<m/P/,<m/A/)</cf> prepends ASN <m/A/ to path <m/P/ and
 	returns the result.