diff --git a/app/liquid_tags/codesandbox_tag.rb b/app/liquid_tags/codesandbox_tag.rb
index e04088368..894b04ff4 100644
--- a/app/liquid_tags/codesandbox_tag.rb
+++ b/app/liquid_tags/codesandbox_tag.rb
@@ -1,5 +1,6 @@
 class CodesandboxTag < LiquidTagBase
   PARTIAL = "liquids/codesandbox".freeze
+  OPTIONS_REGEXP = /\A(initialpath=([a-zA-Z0-9\-\_\/\.\@\%])+)\Z|\A(module=([a-zA-Z0-9\-\_\/\.\@\%])+)\Z|\A(runonclick=((0|1){1}))\Z|\Aview=(editor|split|preview)\Z/.freeze
 
   def initialize(tag_name, id, tokens)
     super
@@ -48,7 +49,7 @@ class CodesandboxTag < LiquidTagBase
   # composed of letters, numbers, dashes, underscores, forward slashes, @ signs, periods/dots,
   # and % symbols.  Invalid options will raise an exception
   def valid_option(option)
-    raise StandardError, "CodeSandbox Error: Invalid options" unless (option =~ /\A(initialpath=([a-zA-Z0-9\-\_\/\.\@\%])+)\Z|\A(module=([a-zA-Z0-9\-\_\/\.\@\%])+)\Z|\A(runonclick=((0|1){1}))\Z|\Aview=(editor|split|preview)\Z/)&.zero?
+    raise StandardError, "CodeSandbox Error: Invalid options" unless (option =~ OPTIONS_REGEXP)&.zero?
 
     option
   end