diff --git a/neurolib/models/model.py b/neurolib/models/model.py
index 00d8340f..a8828007 100644
--- a/neurolib/models/model.py
+++ b/neurolib/models/model.py
@@ -413,6 +413,7 @@ def getMaxDelay(self):
             if signalV > 0:
                 Dmat = Dmat / signalV
             else:
+                # if signalV is 0, eliminate delays
                 Dmat = Dmat * 0.0
 
         # only if Dmat and dt exist, a global max delay can be computed