1 files changed, 1 insertions, 1 deletions
diff --git a/random.c b/random.c
index cb5fd57822..2a72d01d43 100644
--- a/random.c
+++ b/random.c
@@ -540,7 +540,7 @@ make_seed_value(const void *ptr)
 {
     const long len = DEFAULT_SEED_LEN/SIZEOF_BDIGITS;
     BDIGIT *digits;
-    NEWOBJ_OF(big, struct RBignum, rb_cBignum, T_BIGNUM);
+    NEWOBJ_OF(big, struct RBignum, rb_cBignum, T_BIGNUM | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0));
 
     RBIGNUM_SET_SIGN(big, 1);
     rb_big_resize((VALUE)big, len + 1);