diff --git a/ext/cbor/unpacker.c b/ext/cbor/unpacker.c
index 9cd43e4..b21e433 100644
--- a/ext/cbor/unpacker.c
+++ b/ext/cbor/unpacker.c
@@ -769,6 +769,7 @@ int msgpack_unpacker_skip_nil(msgpack_unpacker_t* uk)
         return b;
     }
     if (b == IB_NIL) {
+        reset_head_byte(uk);
         return 1;
     }
     return 0;