diff --git a/axes/signals.py b/axes/signals.py
index 99887b5..99b9433 100644
--- a/axes/signals.py
+++ b/axes/signals.py
@@ -7,6 +7,7 @@ from django.core.cache import cache
 from django.db.models.signals import post_save, post_delete
 from django.dispatch import receiver
 from django.dispatch import Signal
+from django.http import HttpRequest
 from django.utils import timezone
 
 from axes.conf import settings
@@ -52,6 +53,10 @@ def log_user_login_failed(sender, credentials, request, **kwargs):
     if settings.AXES_NEVER_LOCKOUT_WHITELIST and ip_in_whitelist(ip_address):
         return
 
+    if not isinstance(request, HttpRequest):
+        log.warning("AXES: request is not a real HttpRequest. Skipping...")
+        return
+
     failures = 0
     attempts = get_user_attempts(request)
     cache_hash_key = get_cache_key(request)
@@ -138,6 +143,8 @@ def log_user_logged_in(sender, request, user, **kwargs):
     # See oauth2_provider/oauth2_validators.py#L605
     if request is None:
         return
+    if not isinstance(request, HttpRequest):
+        log.warning("AXES: request is not a real HttpRequest")
     username = user.get_username()
     ip_address = get_ip(request)
     user_agent = request_meta_get(request, 'HTTP_USER_AGENT', '<unknown>')[:255]