diff --git a/environment_config.yaml b/environment_config.yaml
index 3e46d23..28f5c6c 100644
--- a/environment_config.yaml
+++ b/environment_config.yaml
@@ -11,3 +11,6 @@ attributes:
       queue_provider: 'rabbitmq'
     label: "Additional config"
     description: "Just put here valid yaml"
+    regex:
+      source: '.+'
+      error: "This field should not be empty"