diff --git a/source/user/input_specs/archetypes.rst b/source/user/input_specs/archetypes.rst
index 3662f2854..286da6ff6 100644
--- a/source/user/input_specs/archetypes.rst
+++ b/source/user/input_specs/archetypes.rst
@@ -59,14 +59,14 @@ in a library file with a name such as `libsimpleSource.so`, in the standard
 
     {
     "archetypes": {
-      "spec": {
+      "spec": [ { 
         "path": "my/custom/path",
         "lib": "myAgentCollection",
         "alias": "ReactorAgent" },
-      "spec": {"name": "simpleSource" },
-      "spec": {"name": "simpleRegion" },
-      "spec": {"name": "simpleInst" }
-    }
+       {"name": "simpleSource" },
+       {"name": "simpleRegion" },
+       {"name": "simpleInst" }
+      ]
     }