diff --git a/bootstraptest/test_syntax.rb b/bootstraptest/test_syntax.rb
index fbc9c6f62e..8301b344c6 100644
--- a/bootstraptest/test_syntax.rb
+++ b/bootstraptest/test_syntax.rb
@@ -848,7 +848,7 @@ assert_normal_exit %q{
       def x(a=1, b, *rest); nil end
     end
   end
-}, bug2415
+}, bug2415 unless rjit_enabled? # flaky
 
 assert_normal_exit %q{
   0.times do
@@ -880,7 +880,7 @@ assert_normal_exit %q{
       end
     end
   end
-}, bug2415
+}, bug2415 unless rjit_enabled? # flaky
 
 assert_normal_exit %q{
   a {