diff --git a/time.c b/time.c
index f20d29e2d3..c0fca66a29 100644
--- a/time.c
+++ b/time.c
@@ -301,7 +301,6 @@ v2w_bignum(VALUE v)
 {
     int sign;
     uwideint_t u;
-    wideint_t i;
     sign = rb_integer_pack(v, &u, 1, sizeof(u), 0,
         INTEGER_PACK_NATIVE_BYTE_ORDER);
     if (sign == 0)