diff --git a/metastable_baselines/misc/norm.py b/metastable_baselines/misc/norm.py
index f40d319..894451b 100644
--- a/metastable_baselines/misc/norm.py
+++ b/metastable_baselines/misc/norm.py
@@ -3,6 +3,10 @@ from torch.distributions.multivariate_normal import _batch_mahalanobis
 
 
 def mahalanobis_alt(u, v, std):
+    """
+    Stolen from Fabian's Code (Public Version)
+
+    """
     delta = u - v
     return th.triangular_solve(delta, std, upper=False)[0].pow(2).sum([-2, -1])