diff --git a/config/output.yaml b/config/output.yaml
index d36a9e1f..52c88595 100644
--- a/config/output.yaml
+++ b/config/output.yaml
@@ -99,4 +99,6 @@ covariance: true # `covariance.csv`: The [free parameters x free parameters] cov
 data: true # `data.json`: The value of every data point in the data.
 noise_map: true # `noise_map.json`: The value of every RMS noise map value.
 
-search_log: true # `search.log`: logging produced whilst running the fit method
\ No newline at end of file
+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