diff --git a/test/integration/test_ad_hoc.rb b/test/integration/test_ad_hoc.rb
index 42926363..4d5f0cbc 100644
--- a/test/integration/test_ad_hoc.rb
+++ b/test/integration/test_ad_hoc.rb
@@ -222,38 +222,40 @@ def test_dont_remove_whitespace_between_tags
     #
     context "comments outside html" do
       context "bare comments" do
-        HTML = "<!-- --!><script>alert(1)</script><!-- -->"
+        let(:html) { "<!-- --!><script>alert(1)</script><!-- -->" }
 
         it "Loofah.document removes the comment" do
-          sanitized = Loofah.document(HTML)
+          sanitized = Loofah.document(html)
           sanitized_html = sanitized.to_html
           refute_match(/--/, sanitized_html)
         end
 
         it "Loofah.scrub_document removes the comment" do
-          sanitized = Loofah.scrub_document(HTML, :prune)
+          sanitized = Loofah.scrub_document(html, :prune)
           sanitized_html = sanitized.to_html
           refute_match(/--/, sanitized_html)
         end
       end
 
       context "doc with comments outside HTML" do
-        HTML = <<~EOF
-          <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
-              <!-- spaces ->
-          		<!-- tabs -->
-                   <!-- more spaces -->
-          <html><body><div>hello
-        EOF
+        let(:html) do
+          <<~EOF
+            <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
+                <!-- spaces ->
+            		<!-- tabs -->
+                     <!-- more spaces -->
+            <html><body><div>hello
+          EOF
+        end
 
         it "Loofah.document removes the comment" do
-          sanitized = Loofah.document(HTML)
+          sanitized = Loofah.document(html)
           sanitized_html = sanitized.to_html
           refute_match(/--/, sanitized_html)
         end
 
         it "Loofah.scrub_document removes the comment" do
-          sanitized = Loofah.scrub_document(HTML, :prune)
+          sanitized = Loofah.scrub_document(html, :prune)
           sanitized_html = sanitized.to_html
           refute_match(/--/, sanitized_html)
         end
