diff --git a/src/cript/nodes/core.py b/src/cript/nodes/core.py
index fcdd2f46..0ecdaeac 100644
--- a/src/cript/nodes/core.py
+++ b/src/cript/nodes/core.py
@@ -293,10 +293,10 @@ def get_expanded_json(self, **kwargs) -> str:
         >>> my_project = cript.Project(name=f"my_Project")
         >>> my_collection = cript.Collection(name="my collection")
         >>> my_material_1 = cript.Material(
-        ...     name="my material 1", bigsmiles = "my material 1 bigsmiles"}]
+        ...     name="my material 1", bigsmiles = "my material 1 bigsmiles"]
         ... )
         >>> my_material_2 = cript.Material(
-        ...     name="my material 2", bigsmiles = "my material 2 bigsmiles"}]
+        ...     name="my material 2", bigsmiles = "my material 2 bigsmiles"]
         ... )
         >>> my_inventory = cript.Inventory(
         ...     name="my inventory", material=[my_material_1, my_material_2]
@@ -511,10 +511,10 @@ def find_children(self, search_attr: dict, search_depth: int = -1, handled_nodes
         >>> my_project = cript.Project(name=f"my_Project")
         >>> my_collection = cript.Collection(name="my collection")
         >>> my_material_1 = cript.Material(
-        ...     name="my material 1", bigsmiles = "my material 1 bigsmiles"}]
+        ...     name="my material 1", bigsmiles = "my material 1 bigsmiles"]
         ... )
         >>> my_material_2 = cript.Material(
-        ...     name="my material 2", bigsmiles = "my material 2 bigsmiles"}]
+        ...     name="my material 2", bigsmiles = "my material 2 bigsmiles"]
         ... )
         >>> my_inventory = cript.Inventory(
         ...     name="my inventory", material=[my_material_1, my_material_2]
diff --git a/tests/fixtures/primary_nodes.py b/tests/fixtures/primary_nodes.py
index 8a917658..65fbf022 100644
--- a/tests/fixtures/primary_nodes.py
+++ b/tests/fixtures/primary_nodes.py
@@ -219,7 +219,7 @@ def simple_material_node() -> cript.Material:
     simple material node to use between tests
     """
     # Use a unique name
-    my_material = cript.Material(name="my test material " + str(uuid.uuid4()), bigsmiles="{[][$]CC[$][]}")
+    my_material = cript.Material(name="my test material " + str(uuid.uuid4()), bigsmiles="{[][$]COC[$][]}")
 
     return my_material