diff --git a/custom_components/multiscrape/util.py b/custom_components/multiscrape/util.py
index 651e8010..3a85bfef 100644
--- a/custom_components/multiscrape/util.py
+++ b/custom_components/multiscrape/util.py
@@ -7,7 +7,7 @@
 
 
 def create_renderer(hass, value_template):
-    """Create a renderer based on variable_template value."""
+    """Create a template renderer based on value_template."""
     if value_template is None:
         return lambda value: value
 
@@ -29,9 +29,12 @@ def _render(value):
 
 
 def create_dict_renderer(hass, templates_dict):
+    """Create template renderers for a dictionary with value_templates."""
     if templates_dict is None:
         return lambda value: {}
 
+    # Create a copy of the templates_dict to avoid modification of the original
+    templates_dict = templates_dict.copy()
     for item in templates_dict:
         templates_dict[item] = create_renderer(hass, templates_dict[item])