diff --git a/pycrostates/utils/utils.py b/pycrostates/utils/utils.py
index 1ffac1a3..aefa6ad0 100644
--- a/pycrostates/utils/utils.py
+++ b/pycrostates/utils/utils.py
@@ -48,16 +48,11 @@ def _corr_vectors(A, B, axis=0):
     np.seterr(divide="warn", invalid="warn")
     return corr
 
-
 def _distance_matrix(X, Y=None):
     """Distance matrix used in metrics."""
-    distances = np.abs(1 / np.corrcoef(X, Y)) - 1
-    distances = np.nan_to_num(
-        distances, copy=False, nan=10e300, posinf=1e300, neginf=-1e300
-    )
+    distances = 1 - np.abs(1 / np.corrcoef(X, Y))
     return distances
 
-
 def _compare_infos(cluster_info, inst_info):
     """Check that channels in cluster_info are all present in inst_info."""
     for ch in cluster_info["ch_names"]: