diff --git a/helpers.lua b/helpers.lua
index 4ca3b1a..e8a46e5 100644
--- a/helpers.lua
+++ b/helpers.lua
@@ -177,7 +177,7 @@ function set_auth_cookie(user, domain)
                        "; Expires="..os.date("%a, %d %b %Y %X UTC", expire)..
                        "; Secure"..
                        "; HttpOnly"..
-                       "; SameSite=Lax ;;"
+                       "; SameSite=Lax"
 
     ngx.header["Set-Cookie"] = {
         "SSOwAuthUser="..user..cookie_str,
@@ -197,7 +197,7 @@ function delete_cookie()
                            "; Expires="..expired_time..
                            "; Secure"..
                            "; HttpOnly"..
-                           "; SameSite=Lax ;;"
+                           "; SameSite=Lax"
         ngx.header["Set-Cookie"] = {
             "SSOwAuthUser="..cookie_str,
             "SSOwAuthHash="..cookie_str,
@@ -214,8 +214,8 @@ function delete_redirect_cookie()
                        "; Expires="..expired_time..
                        "; Secure"..
                        "; HttpOnly"..
-                       "; SameSite=Lax ;;"
-    ngx.header["Set-Cookie"] = "SSOwAuthRedirect=;" ..cookie_str
+                       "; SameSite=Lax"
+    ngx.header["Set-Cookie"] = "SSOwAuthRedirect=" ..cookie_str
 end