diff --git a/challenge/dns01/dns_challenge.go b/challenge/dns01/dns_challenge.go
index 8e271e39..354eb4e3 100644
--- a/challenge/dns01/dns_challenge.go
+++ b/challenge/dns01/dns_challenge.go
@@ -205,6 +205,8 @@ func getChallengeFqdn(domain string) string {
 			break
 		}
 
+		log.Infof("Found CNAME entry for %q: %q", fqdn, cname)
+
 		fqdn = cname
 	}