diff --git a/README.md b/README.md
index 6e17fe9..0995ef4 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,15 @@ response = requests.get(
 ```
 
 
+### Settings
+
+```python
+API_KEY_CONFIG = {
+    'REQUEST_META_KEY': 'HTTP_API_KEY'
+}
+```
+
+
 ### Tests
     
     pyvenv env
diff --git a/rest_framework_api_key/permissions.py b/rest_framework_api_key/permissions.py
index 75a432f..5c7b0da 100644
--- a/rest_framework_api_key/permissions.py
+++ b/rest_framework_api_key/permissions.py
@@ -1,10 +1,11 @@
 from rest_framework import permissions
 from rest_framework_api_key.models import APIKey
+from .settings import api_settings
 
 
 class HasAPIAccess(permissions.BasePermission):
     message = 'Invalid or missing API Key.'
 
     def has_permission(self, request, view):
-        api_key = request.META.get('HTTP_API_KEY', '')
+        api_key = request.META.get(api_settings.REQUEST_META_KEY, '')
         return APIKey.objects.filter(key=api_key).exists()
diff --git a/rest_framework_api_key/settings.py b/rest_framework_api_key/settings.py
new file mode 100644
index 0000000..b360c6c
--- /dev/null
+++ b/rest_framework_api_key/settings.py
@@ -0,0 +1,11 @@
+from django.conf import settings
+from rest_framework.settings import APISettings
+
+
+USER_SETTINGS = getattr(settings, 'API_KEY_CONFIG', None)
+
+DEFAULTS = {
+    'REQUEST_META_KEY': 'HTTP_API_KEY',
+}
+
+api_settings = APISettings(USER_SETTINGS, DEFAULTS)
diff --git a/tests/settings.py b/tests/settings.py
index 43710a0..712c4e2 100644
--- a/tests/settings.py
+++ b/tests/settings.py
@@ -63,3 +63,7 @@
         },
     },
 ]
+
+API_KEY_CONFIG = {
+    'REQUEST_META_KEY': 'HTTP_API_KEY'
+}
diff --git a/tests/test_admin.py b/tests/test_admin.py
index 8c7ab76..1bace58 100644
--- a/tests/test_admin.py
+++ b/tests/test_admin.py
@@ -3,6 +3,7 @@
 from django.test import TestCase
 from rest_framework_api_key.models import APIKey
 from rest_framework_api_key.helpers import generate_key
+from .settings import API_KEY_CONFIG
 
 
 class LoggedInAdminTestCase(TestCase):
@@ -26,7 +27,7 @@ class APIAuthenticatedTestCase(TestCase):
 
     def setUp(self):
         self.app_key = APIKey.objects.create(name=self.APP_NAME, key=generate_key())
-        self.header = {'HTTP_API_KEY': self.app_key.key}
+        self.header = {API_KEY_CONFIG['REQUEST_META_KEY']: self.app_key.key}
 
 
 class AdminTestCase(LoggedInAdminTestCase, APIAuthenticatedTestCase):