diff --git a/src/calliope/attrdict.py b/src/calliope/attrdict.py
index 6c84e51d..3e12e402 100644
--- a/src/calliope/attrdict.py
+++ b/src/calliope/attrdict.py
@@ -359,7 +359,6 @@ def to_yaml(self, path: str | None = None) -> str:
         yaml_.dump(result, stream)
         yaml_str = stream.getvalue()
         if path:
-            yaml_str = self.to_yaml()
             with open(path, "w") as f:
                 f.write(yaml_str)
         return yaml_str