diff --git a/en_US.ISO8859-1/books/handbook/security/chapter.xml b/en_US.ISO8859-1/books/handbook/security/chapter.xml
index 10e9901a74..7ddb7f6e35 100644
--- a/en_US.ISO8859-1/books/handbook/security/chapter.xml
+++ b/en_US.ISO8859-1/books/handbook/security/chapter.xml
@@ -2531,7 +2531,7 @@ timer	# timing options. change as needed
         phase2          15 sec;
 }
 
-listen	# address [port] that racoon will listening on
+listen	# address [port] that racoon will listen on
 {
         isakmp          172.16.5.4 [500];
         isakmp_natt     172.16.5.4 [4500];