diff --git a/test/helpers/application_helper_test.rb b/test/helpers/application_helper_test.rb
index 876ad72cc..e81b38025 100644
--- a/test/helpers/application_helper_test.rb
+++ b/test/helpers/application_helper_test.rb
@@ -1078,24 +1078,22 @@ class ApplicationHelperTest < Redmine::HelperTest
   end
 
   def test_pre_tags
-    raw = <<-RAW
-Before
+    raw = <<~RAW
+      Before
 
-<pre>
-<prepared-statement-cache-size>32</prepared-statement-cache-size>
-</pre>
-
-After
-RAW
-
-    expected = <<-EXPECTED
-<p>Before</p>
-<pre>
-&lt;prepared-statement-cache-size&gt;32&lt;/prepared-statement-cache-size&gt;
-</pre>
-<p>After</p>
-EXPECTED
+      <pre>
+      <prepared-statement-cache-size>32</prepared-statement-cache-size>
+      </pre>
 
+      After
+    RAW
+    expected = <<~EXPECTED
+      <p>Before</p>
+      <pre>
+      &lt;prepared-statement-cache-size&gt;32&lt;/prepared-statement-cache-size&gt;
+      </pre>
+      <p>After</p>
+    EXPECTED
     assert_equal expected.gsub(%r{[\r\n\t]}, ''), textilizable(raw).gsub(%r{[\r\n\t]}, '')
   end