diff --git a/ext/-test-/bug_reporter/bug_reporter.c b/ext/-test-/bug_reporter/bug_reporter.c
index 875c3a4617..1924af4f9b 100644
--- a/ext/-test-/bug_reporter/bug_reporter.c
+++ b/ext/-test-/bug_reporter/bug_reporter.c
@@ -1,24 +1,24 @@
-#include <ruby.h>
-#include <stdio.h>
-
-int rb_bug_reporter_add(void (*func)(FILE *, void *), void *data);
-
-static void
-sample_bug_reporter(FILE *out, void *ptr)
-{
-    int n = (int)ptr;
-    fprintf(out, "Sample bug reporter: %d\n", n);
-}
-
-static VALUE
-register_sample_bug_reporter(VALUE self, VALUE obj)
-{
-    rb_bug_reporter_add(sample_bug_reporter, NUM2INT(obj));
-    return Qnil;
-}
-
-void
-Init_bug_reporter(void)
-{
-    rb_define_global_function("register_sample_bug_reporter", register_sample_bug_reporter, 1);
-}
+#include <ruby.h>
+#include <stdio.h>
+
+int rb_bug_reporter_add(void (*func)(FILE *, void *), void *data);
+
+static void
+sample_bug_reporter(FILE *out, void *ptr)
+{
+    int n = (int)ptr;
+    fprintf(out, "Sample bug reporter: %d\n", n);
+}
+
+static VALUE
+register_sample_bug_reporter(VALUE self, VALUE obj)
+{
+    rb_bug_reporter_add(sample_bug_reporter, NUM2INT(obj));
+    return Qnil;
+}
+
+void
+Init_bug_reporter(void)
+{
+    rb_define_global_function("register_sample_bug_reporter", register_sample_bug_reporter, 1);
+}
diff --git a/ext/-test-/bug_reporter/extconf.rb b/ext/-test-/bug_reporter/extconf.rb
index 76c1e6ff78..0fccd81a41 100644
--- a/ext/-test-/bug_reporter/extconf.rb
+++ b/ext/-test-/bug_reporter/extconf.rb
@@ -1 +1 @@
-create_makefile("-test-/bug_reporter/bug_reporter")
+create_makefile("-test-/bug_reporter/bug_reporter")
diff --git a/test/-ext-/bug_reporter/test_bug_reporter.rb b/test/-ext-/bug_reporter/test_bug_reporter.rb
index 319f3ffe9a..01f8fdc933 100644
--- a/test/-ext-/bug_reporter/test_bug_reporter.rb
+++ b/test/-ext-/bug_reporter/test_bug_reporter.rb
@@ -1,9 +1,9 @@
-require 'test/unit'
-require_relative "../../ruby/envutil"
-
-class TestBugReporter < Test::Unit::TestCase
-  def test_bug_reporter_add
-    expected_stderr = /Sample bug reporter: 12345/
-    assert_in_out_err(["--disable-gems", "-r-test-/bug_reporter/bug_reporter", "-e", "register_sample_bug_reporter(12345); Process.kill :SEGV, $$"], "", [], expected_stderr, nil)
-  end
-end
+require 'test/unit'
+require_relative "../../ruby/envutil"
+
+class TestBugReporter < Test::Unit::TestCase
+  def test_bug_reporter_add
+    expected_stderr = /Sample bug reporter: 12345/
+    assert_in_out_err(["--disable-gems", "-r-test-/bug_reporter/bug_reporter", "-e", "register_sample_bug_reporter(12345); Process.kill :SEGV, $$"], "", [], expected_stderr, nil)
+  end
+end