diff --git a/src/anemoi/models/models/encoder_processor_decoder.py b/src/anemoi/models/models/encoder_processor_decoder.py
index aa7e8bb..c77db6e 100644
--- a/src/anemoi/models/models/encoder_processor_decoder.py
+++ b/src/anemoi/models/models/encoder_processor_decoder.py
@@ -108,7 +108,7 @@ def __init__(
         # Instantiation of model output bounding functions (e.g., to ensure outputs like TP are positive definite)
         self.boundings = nn.ModuleList(
             [
-                instantiate(cfg, name_to_index=self.data_indices.model.output.name_to_index)
+                instantiate(cfg, name_to_index=self.data_indices.internal_model.output.name_to_index)
                 for cfg in getattr(model_config.model, "bounding", [])
             ]
         )