diff --git a/archrepo2/repomon.py b/archrepo2/repomon.py
index c9a3078..2390d08 100755
--- a/archrepo2/repomon.py
+++ b/archrepo2/repomon.py
@@ -194,7 +194,10 @@ class RepoMan:
           del actiondict[act.name]
         else:
           # take the later action, but record the former
-          actiondict[act.name].callback(state=0)
+          try:
+              actiondict[act.name].callback(state=0)
+          except:
+              logger.exception('failed to run action %r.', actiondict[act.name])
           actiondict[act.name] = act
     toadd = [(x.path, x.callback) for x in actiondict.values() if x.action == 'add']
     toremove = [(x.name, x.callback) for x in actiondict.values() if x.action == 'remove']