diff --git a/specparam/metrics/definitions.py b/specparam/metrics/definitions.py
index 321a69c4..55d5dd2b 100644
--- a/specparam/metrics/definitions.py
+++ b/specparam/metrics/definitions.py
@@ -52,7 +52,7 @@
     description='Adjusted R-squared between the model fit and the data.',
     func=compute_adj_r_squared,
     kwargs={'n_params' : lambda data, results: \
-            results.params.periodic.params.size + results.params.aperiodic.params.size},
+        results.params.periodic.params.size + results.params.aperiodic.params.size},
 )
 
 ###################################################################################################