diff --git a/hash.c b/hash.c
index 3dd2777cd1..0c7418f9b7 100644
--- a/hash.c
+++ b/hash.c
@@ -159,7 +159,7 @@ rb_dbl_long_hash(double d)
 	union {double d; uint64_t i;} u;
 
 	u.d = d;
-	return rb_objid_hash(rb_hash_start(u.i));
+	return rb_objid_hash(u.i);
     }
 #endif
 }