Internal names needs to be an array
diff --git a/docs/api-regions.md b/docs/api-regions.md
index 324f35f..58c4841 100644
--- a/docs/api-regions.md
+++ b/docs/api-regions.md
@@ -302,7 +302,7 @@
             "properties" : {
 
             },
-            "internal-names" : "main",
+            "internal-names" : ["main"],
             "operations" : ["CREATE"]
         }
     }