diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c
index d48dc7943a..764383b2d0 100644
--- a/module/zfs/dbuf.c
+++ b/module/zfs/dbuf.c
@@ -1442,10 +1442,8 @@ dbuf_read_impl(dmu_buf_impl_t *db, zio_t *zio, uint32_t flags,
 	zbookmark_phys_t zb;
 	uint32_t aflags = ARC_FLAG_NOWAIT;
 	int err, zio_flags;
-	boolean_t bonus_read;
 
 	err = zio_flags = 0;
-	bonus_read = B_FALSE;
 	DB_DNODE_ENTER(db);
 	dn = DB_DNODE(db);
 	ASSERT(!zfs_refcount_is_zero(&db->db_holds));