diff --git a/lib/rails/html/scrubbers.rb b/lib/rails/html/scrubbers.rb
index 6182abb..da15af9 100644
--- a/lib/rails/html/scrubbers.rb
+++ b/lib/rails/html/scrubbers.rb
@@ -150,7 +150,7 @@ def scrub_attribute(node, attr_node)
             Loofah::HTML5::Scrub.scrub_attribute_that_allows_local_ref(attr_node)
           end
 
-          if Loofah::HTML5::SafeList::SVG_ALLOW_LOCAL_HREF.include?(node.name) && attr_name == "xlink:href" && attr_node.value =~ /^\s*[^#\s].*/m
+          if Loofah::HTML5::SafeList::SVG_ALLOW_LOCAL_HREF.include?(node.name) && attr_name == "xlink:href" && attr_node.value =~ /^\s*[^#].*/m
             attr_node.remove
           end
 
diff --git a/test/scrubbers_test.rb b/test/scrubbers_test.rb
index b0529ea..ed086b2 100644
--- a/test/scrubbers_test.rb
+++ b/test/scrubbers_test.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require "benchmark"
 require "minitest/autorun"
 require "rails-html-sanitizer"