diff --git a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/cors/CORSConfig.java b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/cors/CORSConfig.java
index 7f25b62176285..50f45d0b1f383 100644
--- a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/cors/CORSConfig.java
+++ b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/cors/CORSConfig.java
@@ -15,7 +15,9 @@ public class CORSConfig {
     /**
      * Origins allowed for CORS
      *
-     * Comma separated list of valid URLs. ex: http://www.quarkus.io,http://localhost:3000
+     * Comma separated list of valid URLs, e.g.: http://www.quarkus.io,http://localhost:3000
+     * In case an entry of the list is surrounded by forward slashes,
+     * it is interpreted as a regular expression.
      * The filter allows any origin if this is not set.
      *
      * default: returns any requested origin as valid