diff --git a/docs/src/docs/asciidoc/stubrunner.adoc b/docs/src/docs/asciidoc/stubrunner.adoc
index a053d396a4..6c21f1a464 100644
--- a/docs/src/docs/asciidoc/stubrunner.adoc
+++ b/docs/src/docs/asciidoc/stubrunner.adoc
@@ -70,4 +70,6 @@ groupId:artifactId:classifier:port
 `classifier` and `port` are optional.
 
 * If you don't provide the `classifier` then the default one will be taken.
-* If you don't provide the `port` then a random one will be picked
\ No newline at end of file
+* If you don't provide the `port` then a random one will be picked
+
+Where `port` means the port of the WireMock server.
\ No newline at end of file