diff --git a/modules/administration-guide/attachments/restricted-environment/prepare-restricted-environment.sh b/modules/administration-guide/attachments/restricted-environment/prepare-restricted-environment.sh
index f1d73596a6..a8398f2126 100644
--- a/modules/administration-guide/attachments/restricted-environment/prepare-restricted-environment.sh
+++ b/modules/administration-guide/attachments/restricted-environment/prepare-restricted-environment.sh
@@ -94,7 +94,7 @@ spec:
   components:
     devfileRegistry:
       disableInternalRegistry: false
-      externalDevfileRegistries: {}
+      externalDevfileRegistries: []
     pluginRegistry:
       openVSXURL: ""
 EOF