diff --git a/src/pretix/base/forms/questions.py b/src/pretix/base/forms/questions.py
index 057ec1af6b..6af7b1279b 100644
--- a/src/pretix/base/forms/questions.py
+++ b/src/pretix/base/forms/questions.py
@@ -61,6 +61,7 @@ from django.utils.timezone import get_current_timezone, now
 from django.utils.translation import gettext_lazy as _, pgettext_lazy
 from django_countries import countries
 from django_countries.fields import Country, CountryField
+from geoip2.errors import AddressNotFoundError
 from phonenumber_field.formfields import PhoneNumberField
 from phonenumber_field.phonenumber import PhoneNumber
 from phonenumber_field.widgets import PhoneNumberPrefixWidget
@@ -356,9 +357,12 @@ class WrappedPhoneNumberPrefixWidget(PhoneNumberPrefixWidget):
 def guess_country_from_request(request, event):
     if settings.HAS_GEOIP:
         g = GeoIP2()
-        res = g.country(get_client_ip(request))
-        if res['country_code'] and len(res['country_code']) == 2:
-            return Country(res['country_code'])
+        try:
+            res = g.country(get_client_ip(request))
+            if res['country_code'] and len(res['country_code']) == 2:
+                return Country(res['country_code'])
+        except AddressNotFoundError:
+            pass
     return guess_country(event)
 
 
diff --git a/src/pretix/helpers/security.py b/src/pretix/helpers/security.py
index de605fbaa3..0bcf54ecd8 100644
--- a/src/pretix/helpers/security.py
+++ b/src/pretix/helpers/security.py
@@ -25,6 +25,7 @@ import time
 from django.conf import settings
 from django.contrib.gis.geoip2 import GeoIP2
 from django.core.cache import cache
+from geoip2.errors import AddressNotFoundError
 
 from pretix.helpers.http import get_client_ip
 
@@ -50,7 +51,10 @@ def _get_country(request):
     if not _geoip:
         _geoip = GeoIP2()
 
-    res = _geoip.country(get_client_ip(request))
+    try:
+        res = _geoip.country(get_client_ip(request))
+    except AddressNotFoundError:
+        return None
     return res['country_code']