diff --git a/modules/example/module.conf b/modules/example/module.conf
index 87ccc19..f84e0dc 100644
--- a/modules/example/module.conf
+++ b/modules/example/module.conf
@@ -58,6 +58,7 @@ load modules/example/example.module
 #
 validator	v_example	function	v_example_func
 validator	v_regex		regex		^/test/[a-z]*$
+validator	v_number	regex		^[0-9]*$
 
 # Specify the SSL ciphers that will be used.
 #ssl_cipher	ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK
@@ -126,6 +127,7 @@ domain localhost {
 	# fails. All extra parameters in the GET query are filtered out.
 	params get ^/params-test(\??)[A-Z0-9a-z=&]*$ {
 		validate	arg1		v_example
+		validate	id		v_number
 	}
 }