diff --git a/pyglance/glance/delta.py b/pyglance/glance/delta.py
index f536070f2b01cb82f35dc0294782e5f8b5d7f10c..2c9b98e840118295fb95ffe3f420c7d2c292bbc4 100644
--- a/pyglance/glance/delta.py
+++ b/pyglance/glance/delta.py
@@ -11,7 +11,7 @@ import os, sys, logging
 from numpy import *
 from scipy.stats import pearsonr, spearmanr, pointbiserialr
 
-compute_r = pointbiserialr
+compute_r = spearmanr
 
 LOG = logging.getLogger(__name__)