diff --git a/model.py b/model.py
index 221d78be282bd1db61e7a0456f1d735f89c67ccd..e572c10a1317c21a4b4652c65f49cf9bb19f0264 100644
--- a/model.py
+++ b/model.py
@@ -334,7 +334,7 @@ class Model:
 
       for (u,v) in sp[:top]:
          if (u,v) in seen and pc[(u,v)] == pc[(v,u)]: continue
-         retval.append("%s (%s)" % (" <-> ".join([u,v]), pc[(u,v)]))
+         retval.append("%s (%d)" % (" <-> ".join([u,v]), pc[(u,v)]))
          seen[(u,v)] = True
          if (v,u) in sp and pc[(u,v)] == pc[(v,u)]:
             seen[(v,u)] = True         
@@ -807,7 +807,7 @@ class Simulation:
       seen = {}
       for (u,v) in sp[:top]:
          if (u,v) in seen and pc[(u,v)] == pc[(v,u)]: continue
-         retval.append("%s (%s)" % (" <-> ".join([u,v]), pc[(u,v)]))
+         retval.append("%s (%d)" % (" <-> ".join([u,v]), pc[(u,v)]))
          seen[(u,v)] = True
          if (v,u) in sp and pc[(u,v)] == pc[(v,u)]:
             seen[(v,u)] = True