diff --git a/salt/docker/soc_docker.yaml b/salt/docker/soc_docker.yaml
index 477b2aa26..ef27bcc26 100644
--- a/salt/docker/soc_docker.yaml
+++ b/salt/docker/soc_docker.yaml
@@ -33,7 +33,7 @@ docker:
         advanced: True
         helpLink: docker.html
         multiline: True
-        forcedType: []string
+        forcedType: "[]string"
     so-dockerregistry: *dockerOptions
     so-elastalert: *dockerOptions
     so-elastic-fleet-package-registry: *dockerOptions