1 files changed, 0 insertions, 2 deletions
diff --git a/bignum.c b/bignum.c
index 937d5ba8f4..8a6e54a9da 100644
--- a/bignum.c
+++ b/bignum.c
@@ -1248,6 +1248,4 @@ Init_Bignum()
     rb_define_method(cBignum, "to_f", big_to_f, 0);
     rb_define_method(cBignum, "abs", big_abs, 0);
     rb_define_method(cBignum, "size", big_size, 0);
-
-    FL_SET(cBignum, FL_PRIMITIVE);
 }