diff --git a/API.md b/API.md
index 6a4ed371..e1f1ae77 100644
--- a/API.md
+++ b/API.md
@@ -129,14 +129,14 @@ For performance considerations, sometimes the client might want to choose the
 fields the server sends to it in order to improve the query speed. This
 customization is available for top-level fields of most of the
 [resources](#resources). To choose the fields, the client should pass
-`?_fields=field1,field2,...` suffix to the query. This works regardless of the
+`?fields=field1,field2,...` suffix to the query. This works regardless of the
 requesttype (`GET`, `PUT` etc.).
 
 For example, to list posts while getting only their IDs and tags, the client
 should send a `GET` query like this:
 
 ```
-GET /posts/?_fields=id,tags
+GET /posts/?fields=id,tags
 ```
 
 
diff --git a/client/js/controllers/posts_controller.js b/client/js/controllers/posts_controller.js
index f65fd405..2765f9fb 100644
--- a/client/js/controllers/posts_controller.js
+++ b/client/js/controllers/posts_controller.js
@@ -48,7 +48,7 @@ class PostsController {
             requestPage: page => {
                 const text = this._decorateSearchQuery(ctx.searchQuery.text);
                 return api.get(
-                    `/posts/?query=${text}&page=${page}&pageSize=40&_fields=` +
+                    `/posts/?query=${text}&page=${page}&pageSize=40&fields=` +
                     `id,type,tags,score,favoriteCount,` +
                     `commentCount,thumbnailUrl`);
             },
@@ -64,7 +64,7 @@ class PostsController {
         topNavController.activate('posts');
         Promise.all([
                 api.get('/post/' + id),
-                api.get(`/post/${id}/around?_fields=id&query=`
+                api.get(`/post/${id}/around?fields=id&query=`
                     + this._decorateSearchQuery('')),
         ]).then(responses => {
             const [postResponse, aroundResponse] = responses;
diff --git a/client/js/controllers/tags_controller.js b/client/js/controllers/tags_controller.js
index 35b96269..cd0acf8b 100644
--- a/client/js/controllers/tags_controller.js
+++ b/client/js/controllers/tags_controller.js
@@ -208,7 +208,7 @@ class TagsController {
             requestPage: page => {
                 const text = ctx.searchQuery.text;
                 return api.get(
-                    `/tags/?query=${text}&page=${page}&pageSize=50&_fields=` +
+                    `/tags/?query=${text}&page=${page}&pageSize=50&fields=` +
                     `names,suggestions,implications,lastEditTime,usages`);
             },
             headerRenderer: this._tagsHeaderView,
diff --git a/server/szurubooru/func/util.py b/server/szurubooru/func/util.py
index b4137106..270bf476 100644
--- a/server/szurubooru/func/util.py
+++ b/server/szurubooru/func/util.py
@@ -7,7 +7,7 @@ from contextlib import contextmanager
 from szurubooru import errors
 
 def get_serialization_options(ctx):
-    return ctx.get_param_as_list('_fields', required=False, default=None)
+    return ctx.get_param_as_list('fields', required=False, default=None)
 
 def serialize_entity(entity, field_factories, options):
     if not entity: