diff --git a/test/-ext-/bug_reporter/test_bug_reporter.rb b/test/-ext-/bug_reporter/test_bug_reporter.rb
index 7bfb660faf..576628d63e 100644
--- a/test/-ext-/bug_reporter/test_bug_reporter.rb
+++ b/test/-ext-/bug_reporter/test_bug_reporter.rb
@@ -4,10 +4,12 @@ require 'tmpdir'
 
 class TestBugReporter < Test::Unit::TestCase
   def test_bug_reporter_add
+    description = RUBY_DESCRIPTION
+    description = description.sub(/\+JIT /, '') if RubyVM::MJIT.enabled?
     expected_stderr = [
       :*,
       /\[BUG\]\sSegmentation\sfault.*\n/,
-      /#{ Regexp.quote(RUBY_DESCRIPTION) }\n\n/,
+      /#{ Regexp.quote(description) }\n\n/,
       :*,
       /Sample bug reporter: 12345/,
       :*
diff --git a/test/ruby/test_rubyoptions.rb b/test/ruby/test_rubyoptions.rb
index f7c5c415cf..b7c9d93540 100644
--- a/test/ruby/test_rubyoptions.rb
+++ b/test/ruby/test_rubyoptions.rb
@@ -110,7 +110,7 @@ class TestRubyOptions < Test::Unit::TestCase
     assert_in_out_err(["-vve", ""]) do |r, e|
       assert_match(VERSION_PATTERN, r[0])
       description = RUBY_DESCRIPTION
-      description = description.gsub(/\+JIT /, '') if RubyVM::MJIT.enabled?
+      description = description.sub(/\+JIT /, '') if RubyVM::MJIT.enabled?
       assert_equal(description, r[0])
       assert_equal([], e)
     end