diff --git a/app/javascript/mastodon/actions/notifications.js b/app/javascript/mastodon/actions/notifications.js
index 2674405d2e..14a58e3613 100644
--- a/app/javascript/mastodon/actions/notifications.js
+++ b/app/javascript/mastodon/actions/notifications.js
@@ -83,7 +83,7 @@ export function updateNotifications(notification, intlMessages, intlLocale) {
     if (['mention', 'status'].includes(notification.type) && notification.status.filtered) {
       const filters = notification.status.filtered.filter(result => result.filter.context.includes('notifications'));
 
-      if (filters.some(result => result.filter.filter_action === 'hide')) {
+      if (filters.some(result => result.filter.filter_action_ex === 'hide')) {
         return;
       }
 
diff --git a/app/javascript/mastodon/components/status.jsx b/app/javascript/mastodon/components/status.jsx
index 5f9a3e45e3..bc111547a1 100644
--- a/app/javascript/mastodon/components/status.jsx
+++ b/app/javascript/mastodon/components/status.jsx
@@ -452,7 +452,7 @@ class Status extends ImmutablePureComponent {
         moveDown: this.handleHotkeyMoveDown,
       };
 
-      if (status.get('filter_action') === 'half_warn') {
+      if (status.get('filter_action_ex') === 'half_warn') {
         return (
           <HotKeys handlers={minHandlers}>
             <div className='status__wrapper status__wrapper--filtered focusable' tabIndex={0} ref={this.handleRef}>
diff --git a/app/javascript/mastodon/reducers/filters.js b/app/javascript/mastodon/reducers/filters.js
index 28f0c3e6e4..8816f3f81b 100644
--- a/app/javascript/mastodon/reducers/filters.js
+++ b/app/javascript/mastodon/reducers/filters.js
@@ -9,6 +9,7 @@ const normalizeFilter = (state, filter) => {
     title: filter.title,
     context: filter.context,
     filter_action: filter.filter_action,
+    filter_action_ex: filter.filter_action_ex,
     keywords: filter.keywords,
     expires_at: filter.expires_at ? Date.parse(filter.expires_at) : null,
     with_quote: filter.with_quote,
diff --git a/app/javascript/mastodon/selectors/index.js b/app/javascript/mastodon/selectors/index.js
index f98ccc4417..3dffac1a46 100644
--- a/app/javascript/mastodon/selectors/index.js
+++ b/app/javascript/mastodon/selectors/index.js
@@ -56,13 +56,13 @@ export const makeGetStatus = () => {
           }
         }
 
-        if (filterResults.some((result) => filters.getIn([result.get('filter'), 'filter_action']) === 'hide')) {
+        if (filterResults.some((result) => filters.getIn([result.get('filter'), 'filter_action_ex']) === 'hide')) {
           return null;
         }
         filterResults = filterResults.filter(result => filters.has(result.get('filter')));
         if (!filterResults.isEmpty()) {
           filtered = filterResults.map(result => filters.getIn([result.get('filter'), 'title']));
-          filterAction = filterResults.some((result) => filters.getIn([result.get('filter'), 'filter_action']) === 'warn') ? 'warn' : 'half_warn';
+          filterAction = filterResults.some((result) => filters.getIn([result.get('filter'), 'filter_action_ex']) === 'warn') ? 'warn' : 'half_warn';
         }
       }
 
@@ -72,6 +72,7 @@ export const makeGetStatus = () => {
         map.set('account', accountBase);
         map.set('matched_filters', filtered);
         map.set('filter_action', filterAction);
+        map.set('filter_action_ex', filterAction);
       });
     },
   );
diff --git a/app/serializers/rest/filter_serializer.rb b/app/serializers/rest/filter_serializer.rb
index 08fadda582..2750b81417 100644
--- a/app/serializers/rest/filter_serializer.rb
+++ b/app/serializers/rest/filter_serializer.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class REST::FilterSerializer < ActiveModel::Serializer
-  attributes :id, :title, :exclude_follows, :exclude_localusers, :with_quote, :context, :expires_at, :filter_action
+  attributes :id, :title, :exclude_follows, :exclude_localusers, :with_quote, :context, :expires_at, :filter_action, :filter_action_ex
   has_many :keywords, serializer: REST::FilterKeywordSerializer, if: :rules_requested?
   has_many :statuses, serializer: REST::FilterStatusSerializer, if: :rules_requested?
 
@@ -12,4 +12,14 @@ class REST::FilterSerializer < ActiveModel::Serializer
   def rules_requested?
     instance_options[:rules_requested]
   end
+
+  def filter_action
+    return :hide if object.half_warn_action?
+
+    object.filter_action
+  end
+
+  def filter_action_ex
+    object.filter_action
+  end
 end
diff --git a/streaming/index.js b/streaming/index.js
index ec36a5de53..5804ad3070 100644
--- a/streaming/index.js
+++ b/streaming/index.js
@@ -836,8 +836,9 @@ const startServer = async () => {
                     // custom_filters.action database column, it is an integer
                     // representing a value in an enum defined by Ruby on Rails:
                     //
-                    // enum { warn: 0, hide: 1 }
-                    filter_action: ['warn', 'hide', 'half_warn'][filter.filter_action],
+                    // enum { warn: 0, hide: 1, half_warn: 2 }
+                    filter_action: ['warn', 'hide', 'half_warn'][Math.min(filter.filter_action, 1)],
+                    filter_action_ex: ['warn', 'hide', 'half_warn'][filter.filter_action],
                     with_quote: filter.with_quote,
                     excludeFollows: filter.exclude_follows,
                     excludeLocalusers: filter.exclude_localusers,