diff --git a/cookie.go b/cookie.go
index db3f5fd..9544953 100644
--- a/cookie.go
+++ b/cookie.go
@@ -1,7 +1,6 @@
 package session
 
 import (
-	"strings"
 	"time"
 
 	"github.com/valyala/fasthttp"
@@ -15,7 +14,7 @@ func (c *cookie) get(ctx *fasthttp.RequestCtx, name string) []byte {
 	return ctx.Request.Header.Cookie(name)
 }
 
-func (c *cookie) set(ctx *fasthttp.RequestCtx, name string, value []byte, domain string, expiration time.Duration, secure bool, sameSite string) {
+func (c *cookie) set(ctx *fasthttp.RequestCtx, name string, value []byte, domain string, expiration time.Duration, secure bool, CookieSameSite fasthttp.CookieSameSite) {
 	cookie := fasthttp.AcquireCookie()
 
 	cookie.SetKey(name)
@@ -23,17 +22,7 @@ func (c *cookie) set(ctx *fasthttp.RequestCtx, name string, value []byte, domain
 	cookie.SetHTTPOnly(true)
 	cookie.SetDomain(domain)
 	cookie.SetValueBytes(value)
-
-	switch strings.ToLower(sameSite) {
-	case "lax":
-		cookie.SetSameSite(fasthttp.CookieSameSiteLaxMode)
-	case "strict":
-		cookie.SetSameSite(fasthttp.CookieSameSiteStrictMode)
-	case "none":
-		cookie.SetSameSite(fasthttp.CookieSameSiteNoneMode)
-	default:
-		cookie.SetSameSite(fasthttp.CookieSameSiteDisabled)
-	}
+	cookie.SetSameSite(CookieSameSite)
 
 	if expiration >= 0 {
 		if expiration == 0 {
diff --git a/cookie_test.go b/cookie_test.go
index c118328..77175a3 100644
--- a/cookie_test.go
+++ b/cookie_test.go
@@ -39,7 +39,7 @@ func TestCookie_set(t *testing.T) {
 	domain := "domain"
 	expiration := 10 * time.Second
 	secure := true
-	samesite := "Lax"
+	samesite := fasthttp.CookieSameSiteLaxMode
 
 	now := time.Now()
 	cookie.set(ctx, key, value, domain, expiration, secure, samesite)
diff --git a/session.go b/session.go
index ea29a28..c45ae89 100644
--- a/session.go
+++ b/session.go
@@ -92,7 +92,7 @@ func (s *Session) stopGC() {
 
 func (s *Session) setHTTPValues(ctx *fasthttp.RequestCtx, sessionID []byte, expiration time.Duration) {
 	secure := s.config.Secure && s.config.IsSecureFunc(ctx)
-	s.cookie.set(ctx, s.config.CookieName, sessionID, s.config.Domain, expiration, secure, s.config.SameSite)
+	s.cookie.set(ctx, s.config.CookieName, sessionID, s.config.Domain, expiration, secure, s.config.CookieSameSite)
 
 	if s.config.SessionIDInHTTPHeader {
 		ctx.Request.Header.SetBytesV(s.config.SessionNameInHTTPHeader, sessionID)
diff --git a/types.go b/types.go
index 036b80f..01413d7 100644
--- a/types.go
+++ b/types.go
@@ -31,7 +31,7 @@ type Config struct {
 
 	// allows you to declare if your cookie should be restricted to a first-party or same-site context.
 	// possible values: lax, strict, none
-	SameSite string
+	CookieSameSite fasthttp.CookieSameSite
 
 	// sessionID is in url query
 	SessionIDInURLQuery bool