diff --git a/cvat/settings/base.py b/cvat/settings/base.py
index 08ae7e2b4e0..b15466dac79 100644
--- a/cvat/settings/base.py
+++ b/cvat/settings/base.py
@@ -192,10 +192,11 @@ def generate_ssh_keys():
 CORS_ALLOW_CREDENTIALS = True
 CSRF_TRUSTED_ORIGINS = [UI_HOST]
 UI_URL = '{}://{}'.format(UI_SCHEME, UI_HOST)
+UI_WITHOUT_PORT = UI_URL
 if len(UI_URL):
     UI_URL += ':{}'.format(UI_PORT)
 
-CORS_ORIGIN_WHITELIST = [UI_URL]
+CORS_ORIGIN_WHITELIST = [UI_URL, UI_WITHOUT_PORT]
 CORS_REPLACE_HTTPS_REFERER = True
 
 STATICFILES_FINDERS = [