diff --git a/docs/modules/ROOT/pages/architecture/operator.adoc b/docs/modules/ROOT/pages/architecture/operator.adoc
index f641415654..541edb49cf 100644
--- a/docs/modules/ROOT/pages/architecture/operator.adoc
+++ b/docs/modules/ROOT/pages/architecture/operator.adoc
@@ -33,7 +33,7 @@ image::architecture/camel-k-state-machine-basic.png[State Machine]
 
 Each state of the CR is handled by a dedicated handler, named `Action`, defined as follow:
 
-[code,go]
+[source,go]
 ----
 type Action interface {
 	CanHandle(cr *v1.CR) bool // <1>