diff --git a/src/app/default/restmap.conf b/src/app/default/restmap.conf
index 44d6526..3f82257 100644
--- a/src/app/default/restmap.conf
+++ b/src/app/default/restmap.conf
@@ -1,2 +1,2 @@
 [validation:savedsearch]
-action.slack.param.channel = validate( match('action.slack.param.channel', "^[#@]"), "Slack channel is invalid (must start with # or @)")
+action.slack.param.channel = validate(len(trim('action.slack.param.channel')) > 0), "Channel cannot be empty")
\ No newline at end of file