diff --git a/test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb b/test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb
index c78bbc5a3..6cfd696bd 100644
--- a/test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb
+++ b/test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb
@@ -540,16 +540,15 @@ STR
   end
 
   def test_get_section_should_support_headings_starting_with_a_tab
-    text = <<-STR
-h1.\tHeading 1
+    text = <<~STR
+      h1.\tHeading 1
 
-Content 1
+      Content 1
 
-h1. Heading 2
-
-Content 2
-STR
+      h1. Heading 2
 
+      Content 2
+    STR
     assert_match /\Ah1.\tHeading 1\s+Content 1\z/, @formatter.new(text).get_section(1).first
   end