diff --git a/pyzipline/zipline.py b/pyzipline/zipline.py
index d20d79e..3637fed 100644
--- a/pyzipline/zipline.py
+++ b/pyzipline/zipline.py
@@ -35,9 +35,14 @@ class ZiplineApi:
             type: warning
         ///
 
+        /// admonition | Parameter Requires Super Administrator
+            type: danger
+        The authenticated user must be a Super Administrator to use the `admin` parameter.
+        ///
+
         /// admonition | Conditionally Requires Administrator
             type: danger
-        The authenticated user must be an Administrator to use the `admin` parameter or register a user when registration is disabled.
+        The authenticated user must be an Administrator to register a user when registration is disabled.
         ///
 
         Args:
@@ -47,23 +52,23 @@ class ZiplineApi:
             admin (bool): Whether or not the new user should be an administrator, authenticated user must be a super administrator to create an administrator
 
         Raises:
-            Forbidden: Raised if the authenticated user is not an super administrator and attempts to create an administrator
             FeatureDisabledError: Raised when:\n
-              - registration or invites are disabled on the Zipline instance and the authenticated user is not an administrator
-              - invite code is provided and invites are disabled
+                - registration or invites are disabled on the Zipline instance and the authenticated user is not an administrator
+                - invite code is provided and invites are disabled
+            Forbidden: Raised if the authenticated user is not an super administrator and attempts to create an administrator
             PyZiplineError: Raised if the API changes, causing a breaking change in this method
             ValueError: Raised when the username is already taken or if the invite code is invalid/expired
 
         Returns:
             User: The newly created user
         """
-        data = {'username': username, 'password': password}
+        json = {'username': username, 'password': password}
         if invite is not None:
-            data['code'] = invite
+            json['code'] = invite
         if admin:
-            data['admin'] = True
+            json['admin'] = True
 
-        result: Result = self._rest_adapter.post(endpoint="auth/register", data=data)
+        result: Result = self._rest_adapter.post(endpoint="auth/register", json=json)
         if result.status_code == 200:
             return User(**result.data)
 
@@ -98,8 +103,8 @@ class ZiplineApi:
         Returns:
             bool: True if user exists, False if not
         """
-        data = {'username': username} if invite is None else {'username': username, 'code': invite}
-        result: Result = self._rest_adapter.post(endpoint="user/check", data=data)
+        json = {'username': username} if invite is None else {'username': username, 'code': invite}
+        result: Result = self._rest_adapter.post(endpoint="user/check", json=json)
         if result.status_code == 200:
             return False
         if result.message == 'username already exists':
@@ -203,7 +208,7 @@ class ZiplineApi:
                 return stats_list
             data = result.data[0] if isinstance(result.data, list) else result.data
             return Stats(**data)
-        if result.status_code == 401 or result.status_code == 403:
+        if result.status_code in (401, 403):
             raise Forbidden(result.message)
         raise PyZiplineError(f"{result.status_code}: {result.message}\n{result.data}")