diff --git a/test/drb/drbtest.rb b/test/drb/drbtest.rb
index f3d2020..3c33aed 100644
--- a/test/drb/drbtest.rb
+++ b/test/drb/drbtest.rb
@@ -216,7 +216,7 @@ def test_05_eq
   def test_06_timeout
     omit if RUBY_PLATFORM.include?("armv7l-linux")
     omit if RUBY_PLATFORM.include?("sparc-solaris2.10")
-    omit if defined?(RubyVM::JIT) && RubyVM::JIT.enabled? # expecting a certain delay is difficult for --jit-wait CI
+    omit if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled? # expecting a certain delay is difficult for --jit-wait CI
     Timeout.timeout(60) do
       ten = Onecky.new(10)
       assert_raise(Timeout::Error) do
diff --git a/test/lib/core_assertions.rb b/test/lib/core_assertions.rb
index 4471525..bac3856 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)