diff --git a/client/client.go b/client/client.go
index 2be54fe..3f1f0c8 100644
--- a/client/client.go
+++ b/client/client.go
@@ -56,8 +56,7 @@ type Client struct {
 }
 
 type Domain struct {
-	Domain     string `json:"domain"`
-	IncludeWWW bool   `json:"includeWWW,omitempty"`
+	Domain string `json:"domain"`
 }
 
 type Option func(*Client)
@@ -355,24 +354,9 @@ func (c *Client) CheckDomainNames(domains []string) ([]models.DomainResponse, er
 func (c *Client) RequestCertificate(domains []string, csr string, transactionType string, organization models.OrganizationResponse) (*models.CertificateRequestResponse, error) {
 	c.loginLock.RLock()
 	defer c.loginLock.RUnlock()
-
-	// Harica currently does not permit leading "www." in domains and
-	// requires the "includeWWW" option. It's not possible to create a
-	// certificate with only a domain with a leading "www.".
-	domainsMap := make(map[string]bool)
-	for _, domain := range domains {
-		domainsMap[domain] = true
-	}
 	var domainDto []Domain
 	for _, domain := range domains {
-		if strings.HasPrefix(domain, "www.") &&
-			domainsMap[strings.TrimPrefix(domain, "www.")] {
-			continue
-		}
-		domainDto = append(domainDto, Domain{
-			Domain:     domain,
-			IncludeWWW: domainsMap["www."+domain],
-		})
+		domainDto = append(domainDto, Domain{Domain: domain})
 	}
 
 	// Ensure that the CSR is in the correct format so we parse it and transform it again