diff --git a/test/ruby/test_parse.rb b/test/ruby/test_parse.rb
index 49b25fcaf08191..71507575a7dd57 100644
--- a/test/ruby/test_parse.rb
+++ b/test/ruby/test_parse.rb
@@ -1095,31 +1095,31 @@ def test_file_in_indented_heredoc
     end;
   end
 
-    def test_heredoc_interpolation
-      var = 1
-
-      v1 = <<~HEREDOC
-        something
-        #{"/#{var}"}
-      HEREDOC
-
-      v2 = <<~HEREDOC
-        something
-        #{_other = "/#{var}"}
-      HEREDOC
-
-      v3 = <<~HEREDOC
-        something
-        #{("/#{var}")}
-      HEREDOC
-
-      assert_equal "something\n/1\n", v1
-      assert_equal "something\n/1\n", v2
-      assert_equal "something\n/1\n", v3
-      assert_equal v1, v2
-      assert_equal v2, v3
-      assert_equal v1, v3
-    end
+  def test_heredoc_interpolation
+    var = 1
+
+    v1 = <<~HEREDOC
+      something
+      #{"/#{var}"}
+    HEREDOC
+
+    v2 = <<~HEREDOC
+      something
+      #{_other = "/#{var}"}
+    HEREDOC
+
+    v3 = <<~HEREDOC
+      something
+      #{("/#{var}")}
+    HEREDOC
+
+    assert_equal "something\n/1\n", v1
+    assert_equal "something\n/1\n", v2
+    assert_equal "something\n/1\n", v3
+    assert_equal v1, v2
+    assert_equal v2, v3
+    assert_equal v1, v3
+  end
 
   def test_unexpected_token_error
     assert_syntax_error('"x"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx', /unexpected/)