diff --git a/test/lib/core_assertions.rb b/test/lib/core_assertions.rb
index 44715255..bac3856a 100644
--- a/test/lib/core_assertions.rb
+++ b/test/lib/core_assertions.rb
@@ -100,7 +100,7 @@ def syntax_check(code, fname, line)
 
       def assert_no_memory_leak(args, prepare, code, message=nil, limit: 2.0, rss: false, **opt)
         # TODO: consider choosing some appropriate limit for MJIT and stop skipping this once it does not randomly fail
-        pend 'assert_no_memory_leak may consider MJIT memory usage as leak' if defined?(RubyVM::JIT) && RubyVM::JIT.enabled?
+        pend 'assert_no_memory_leak may consider MJIT memory usage as leak' if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled?
 
         require_relative 'memory_status'
         raise Test::Unit::PendedError, "unsupported platform" unless defined?(Memory::Status)
diff --git a/test/net/http/test_httpresponse.rb b/test/net/http/test_httpresponse.rb
index 00b0072e..1a789072 100644
--- a/test/net/http/test_httpresponse.rb
+++ b/test/net/http/test_httpresponse.rb
@@ -78,7 +78,7 @@ def test_read_body_block
 
   def test_read_body_block_mod
     # http://ci.rvm.jp/results/trunk-mjit-wait@silicon-docker/3019353
-    if defined?(RubyVM::JIT) ? RubyVM::JIT.enabled? : defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled?
+    if defined?(RubyVM::MJIT) ? RubyVM::MJIT.enabled? : defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled?
       omit 'too unstable with --jit-wait, and extending read_timeout did not help it'
     end
     IO.pipe do |r, w|