diff --git a/dojo/okta.py b/dojo/okta.py
index e64bf343b1..7c564d005a 100644
--- a/dojo/okta.py
+++ b/dojo/okta.py
@@ -9,13 +9,23 @@
 
 from urllib.parse import urljoin
 
-from ..utils import append_slash
 from .oauth import BaseOAuth2
 
 
 class OktaMixin:
+
+    def append_slash(self, url):
+        """Make sure we append a slash at the end of the URL otherwise we
+        have issues with urljoin Example:
+        >>> urlparse.urljoin('http://www.example.com/api/v3', 'user/1/')
+        'http://www.example.com/api/user/1/'
+        """
+        if url and not url.endswith("/"):
+            url = f"{url}/"
+        return url
+
     def api_url(self):
-        return append_slash(self.setting("API_URL"))
+        return self.append_slash(self.setting("API_URL"))
 
     def authorization_url(self):
         return self._url("v1/authorize")
@@ -24,7 +34,7 @@ def access_token_url(self):
         return self._url("v1/token")
 
     def _url(self, path):
-        return urljoin(append_slash(self.setting("API_URL")), path)
+        return urljoin(self.append_slash(self.setting("API_URL")), path)
 
     def oidc_config(self):
         return self.get_json(