diff --git a/lib/chef/knife/openvpn.rb b/lib/chef/knife/openvpn.rb
index 8b8897a..f9dc336 100644
--- a/lib/chef/knife/openvpn.rb
+++ b/lib/chef/knife/openvpn.rb
@@ -150,7 +150,7 @@ def issue_crl(revoke_info, serial, lastup, nextup, extensions,
                            OpenSSL::BN.new(rserial)
                          end
 
-        revoked.time = if time.is_a?
+        revoked.time = if time.is_a? Time
                          time
                        else
                          Time.parse(time)