diff --git a/dbt_semantic_interfaces/validations/unique_valid_name.py b/dbt_semantic_interfaces/validations/unique_valid_name.py
index 13a8c7e9..0da650ce 100644
--- a/dbt_semantic_interfaces/validations/unique_valid_name.py
+++ b/dbt_semantic_interfaces/validations/unique_valid_name.py
@@ -174,6 +174,10 @@ def _validate_semantic_model_elements_and_time_spines(semantic_manifest: Semanti
 
         for metric in semantic_manifest.metrics:
             custom_granularity_restricted_names_and_types[metric.name] = SemanticManifestNodeType.METRIC.value
+        for semantic_model in semantic_manifest.semantic_models:
+            custom_granularity_restricted_names_and_types[semantic_model.name] = (
+                SemanticManifestNodeType.SEMANTIC_MODEL.value
+            )
 
         # Verify custom granularity names are unique across relevant elements
         seen_custom_granularity_names: Set[str] = set()