diff --git a/include/ucore/pack.h b/include/ucore/pack.h
index 889adcc..7c02a41 100644
--- a/include/ucore/pack.h
+++ b/include/ucore/pack.h
@@ -245,10 +245,5 @@ static UC_INLINE uint64_t uc_unpack_64_be(const uint8_t *r)
     return v;
 }
 
-
-
-#undef UC_INLINE
-
-
 #endif