diff --git a/src/modules/users.js b/src/modules/users.js
index ca4358ca8c..f12348d48f 100644
--- a/src/modules/users.js
+++ b/src/modules/users.js
@@ -197,8 +197,8 @@ const users = {
     },
     blockUser (store, userId) {
       return store.rootState.api.backendInteractor.blockUser(userId)
-        .then((blockedUser) => {
-          store.commit('addNewUsers', [blockedUser])
+        .then((relationship) => {
+          store.commit('updateUserRelationship', [relationship])
           store.commit('removeStatus', { timeline: 'friends', userId })
           store.commit('removeStatus', { timeline: 'public', userId })
           store.commit('removeStatus', { timeline: 'publicAndExternal', userId })
@@ -206,7 +206,7 @@ const users = {
     },
     unblockUser (store, id) {
       return store.rootState.api.backendInteractor.unblockUser(id)
-        .then((user) => store.commit('addNewUsers', [user]))
+        .then((relationship) => store.commit('updateUserRelationship', [relationship]))
     },
     fetchMutes (store) {
       return store.rootState.api.backendInteractor.fetchMutes()
diff --git a/src/services/api/api.service.js b/src/services/api/api.service.js
index c3f863c8cb..36441017db 100644
--- a/src/services/api/api.service.js
+++ b/src/services/api/api.service.js
@@ -30,8 +30,6 @@ const PROFILE_UPDATE_URL = '/api/account/update_profile.json'
 const EXTERNAL_PROFILE_URL = '/api/externalprofile/show.json'
 const QVITTER_USER_NOTIFICATIONS_URL = '/api/qvitter/statuses/notifications.json'
 const QVITTER_USER_NOTIFICATIONS_READ_URL = '/api/qvitter/statuses/notifications/read.json'
-const BLOCKING_URL = '/api/blocks/create.json'
-const UNBLOCKING_URL = '/api/blocks/destroy.json'
 const FOLLOW_IMPORT_URL = '/api/pleroma/follow_import'
 const DELETE_ACCOUNT_URL = '/api/pleroma/delete_account'
 const CHANGE_PASSWORD_URL = '/api/pleroma/change_password'
@@ -46,6 +44,8 @@ const MASTODON_USER_RELATIONSHIPS_URL = '/api/v1/accounts/relationships'
 const MASTODON_USER_TIMELINE_URL = id => `/api/v1/accounts/${id}/statuses`
 const MASTODON_USER_BLOCKS_URL = '/api/v1/blocks/'
 const MASTODON_USER_MUTES_URL = '/api/v1/mutes/'
+const MASTODON_BLOCK_USER_URL = id => `/api/v1/accounts/${id}/block`
+const MASTODON_UNBLOCK_USER_URL = id => `/api/v1/accounts/${id}/unblock`
 
 import { each, map } from 'lodash'
 import { parseStatus, parseUser, parseNotification } from '../entity_normalizer/entity_normalizer.service.js'
@@ -228,16 +228,14 @@ const unfollowUser = ({id, credentials}) => {
 }
 
 const blockUser = ({id, credentials}) => {
-  let url = `${BLOCKING_URL}?user_id=${id}`
-  return fetch(url, {
+  return fetch(MASTODON_BLOCK_USER_URL(id), {
     headers: authHeaders(credentials),
     method: 'POST'
   }).then((data) => data.json())
 }
 
 const unblockUser = ({id, credentials}) => {
-  let url = `${UNBLOCKING_URL}?user_id=${id}`
-  return fetch(url, {
+  return fetch(MASTODON_UNBLOCK_USER_URL(id), {
     headers: authHeaders(credentials),
     method: 'POST'
   }).then((data) => data.json())