diff --git a/lib/mjit/compiler.rb b/lib/mjit/compiler.rb
index 3ccdc1c925..734e33e59f 100644
--- a/lib/mjit/compiler.rb
+++ b/lib/mjit/compiler.rb
@@ -1,6 +1,4 @@
 module RubyVM::MJIT
-  ROBJECT_EMBED_LEN_MAX = C.ROBJECT_EMBED_LEN_MAX
-
   UNSUPPORTED_INSNS = [
     :defineclass, # low priority
   ]
diff --git a/mjit_c.rb b/mjit_c.rb
index 05ddfae468..f2086cf946 100644
--- a/mjit_c.rb
+++ b/mjit_c.rb
@@ -7,10 +7,6 @@ module RubyVM::MJIT
   # This `class << C` section is for calling C functions. For importing variables
   # or macros as is, please consider using tool/mjit/bindgen.rb instead.
   class << C
-    def ROBJECT_EMBED_LEN_MAX
-      Primitive.cexpr! 'INT2NUM(RBIMPL_EMBED_LEN_MAX_OF(VALUE))'
-    end
-
     def cdhash_to_hash(cdhash_addr)
       Primitive.cdhash_to_hash(cdhash_addr)
     end