diff --git a/core/dbt/context/providers.py b/core/dbt/context/providers.py
index 996d5027c58..7a6344f1a8e 100644
--- a/core/dbt/context/providers.py
+++ b/core/dbt/context/providers.py
@@ -862,8 +862,7 @@ def try_or_compiler_error(
     def load_agate_table(self) -> agate.Table:
         if not isinstance(self.model, SeedNode):
             raise LoadAgateTableNotSeedError(self.model.resource_type, node=self.model)
-        assert self.model.root_path
-        path = os.path.join(self.model.root_path, self.model.original_file_path)
+        path = os.path.join(self.config.project_root, self.model.original_file_path)
         column_types = self.model.config.column_types
         delimiter = self.model.config.delimiter
         try: