Webhooks containing %20 on the URL are not working

2013-07-25 16:59:52.475163500 Exception in thread "pool-28-thread-1" com.atlassian.uri.Uri$UriException: java.net.URISyntaxException: Illegal character in path at index 40: http://example.com/rest/webhooks/webhook test?user_id=sysadmin
2013-07-25 16:59:52.475286500 	at com.atlassian.uri.Uri.toJavaUri(Uri.java:129)
2013-07-25 16:59:52.475287500 	at com.atlassian.webhooks.plugin.PublishTaskFactoryImpl$PublishTaskImpl.getUri(PublishTaskFactoryImpl.java:151)
2013-07-25 16:59:52.475288500 	at com.atlassian.webhooks.plugin.PublishTaskFactoryImpl$PublishTaskImpl.run(PublishTaskFactoryImpl.java:116)
2013-07-25 16:59:52.475292500 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
2013-07-25 16:59:52.475306500 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
2013-07-25 16:59:52.475318500 	at java.lang.Thread.run(Thread.java:662)
2013-07-25 16:59:52.475505500 Caused by: java.net.URISyntaxException: Illegal character in path at index 40: http://example.com/rest/webhooks/webhook test?user_id=sysadmin
2013-07-25 16:59:52.475506500 	at java.net.URI$Parser.fail(URI.java:2809)
2013-07-25 16:59:52.475506500 	at java.net.URI$Parser.checkChars(URI.java:2982)
2013-07-25 16:59:52.476011500 	at java.net.URI$Parser.parseHierarchical(URI.java:3066)
2013-07-25 16:59:52.476012500 	at java.net.URI$Parser.parse(URI.java:3014)
2013-07-25 16:59:52.476012500 	at java.net.URI.<init>(URI.java:578)
2013-07-25 16:59:52.476012500 	at com.atlassian.uri.Uri.toJavaUri(Uri.java:124)
2013-07-25 16:59:52.476013500 	... 5 more