diff --git a/src/rest_framework_api_key/admin.py b/src/rest_framework_api_key/admin.py
index a368b45..2a04d78 100644
--- a/src/rest_framework_api_key/admin.py
+++ b/src/rest_framework_api_key/admin.py
@@ -54,8 +54,3 @@ def save_model(
             messages.add_message(request, messages.WARNING, message)
         else:
             obj.save()
-
-
-admin.site.register(APIKey, APIKeyModelAdmin)
-
-APIKeyAdmin = APIKeyModelAdmin  # Compatibility with <1.3
diff --git a/src/rest_framework_api_key/models.py b/src/rest_framework_api_key/models.py
index 034ea6d..5602fdb 100644
--- a/src/rest_framework_api_key/models.py
+++ b/src/rest_framework_api_key/models.py
@@ -157,7 +157,3 @@ def _validate_revoked(self) -> None:
 
     def __str__(self) -> str:
         return str(self.name)
-
-
-class APIKey(AbstractAPIKey):
-    pass