diff --git a/backup.py b/backup.py
index ec90e34..a84d07f 100755
--- a/backup.py
+++ b/backup.py
@@ -306,7 +306,8 @@ class Backup(object):
                                                   repo['name'],
                                                   self.args['archive']))
                 for p in repo['path']:
-                    _cmd.append(p)
+                    if os.path.exists(p):
+                        _cmd.append(p)
                 self.logger.debug('VARS: {0}'.format(vars()))
                 # We don't use self.cmdExec() here because we want to explicitly
                 # pass the env and format the log line differently.