diff --git a/challenge/dns01/dns_challenge.go b/challenge/dns01/dns_challenge.go
index c9ef2ee3..b780d8f2 100644
--- a/challenge/dns01/dns_challenge.go
+++ b/challenge/dns01/dns_challenge.go
@@ -135,7 +135,7 @@ func (c *Challenge) Solve(authz acme.Authorization) error {
 	}
 
 	chlng.KeyAuthorization = keyAuth
-	return c.validate(c.core, authz.Identifier.Value, chlng)
+	return c.validate(c.core, domain, chlng)
 }
 
 // CleanUp cleans the challenge.
diff --git a/challenge/http01/http_challenge.go b/challenge/http01/http_challenge.go
index 4176ecae..861bdbed 100644
--- a/challenge/http01/http_challenge.go
+++ b/challenge/http01/http_challenge.go
@@ -61,5 +61,5 @@ func (c *Challenge) Solve(authz acme.Authorization) error {
 	}()
 
 	chlng.KeyAuthorization = keyAuth
-	return c.validate(c.core, authz.Identifier.Value, chlng)
+	return c.validate(c.core, domain, chlng)
 }