diff --git a/app/javascript/initializers/custom_stream_actions.js b/app/javascript/initializers/custom_stream_actions.js
deleted file mode 100644
index fecb25ff5..000000000
--- a/app/javascript/initializers/custom_stream_actions.js
+++ /dev/null
@@ -1,8 +0,0 @@
-import { Turbo } from "@hotwired/turbo-rails"
-
-Turbo.StreamActions.set_css_variable = function() {
-  const name = this.getAttribute("name")
-  const value = this.getAttribute("value")
-
-  this.targetElements.forEach(element => element.style.setProperty(name, value))
-}
diff --git a/app/javascript/initializers/index.js b/app/javascript/initializers/index.js
index 01fdd9220..10fb36975 100644
--- a/app/javascript/initializers/index.js
+++ b/app/javascript/initializers/index.js
@@ -1,2 +1 @@
 import "initializers/current"
-import "initializers/custom_stream_actions"
diff --git a/lib/rails_ext/turbo_streams_action_helper.rb b/lib/rails_ext/turbo_streams_action_helper.rb
deleted file mode 100644
index 001c9706e..000000000
--- a/lib/rails_ext/turbo_streams_action_helper.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-module TurboStreamsActionsHelper
-  def set_css_variable(target, name:, value:)
-    tag.turbo_stream target: target, action: "set_css_variable", name:, value:
-  end
-end
-
-Turbo::Streams::TagBuilder.prepend(TurboStreamsActionsHelper)