diff --git a/config/output.yaml b/config/output.yaml
index fad529dd..e6f60b79 100644
--- a/config/output.yaml
+++ b/config/output.yaml
@@ -95,4 +95,6 @@ latent_results: true # Whether to output the `latent.results` file.
 
 # Other Files:
 
-search_log: true # `search.log`: logging produced whilst running the fit method
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+search_log: true # `search.log`: logging produced whilst running the fit method
+
+model_graph: false # `model.graph`: graphical-model factor graph summary. Only meaningful for graphical models (autofit.graphical); empty for ordinary PriorModel/Collection fits, so disabled by default.
\ No newline at end of file