diff --git a/Core/PBUtility.h b/Core/PBUtility.h
index 1bccd6ae..125ae6ca 100755
--- a/Core/PBUtility.h
+++ b/Core/PBUtility.h
@@ -23,6 +23,7 @@
 #ifdef  __cplusplus
 
 #include "MMKVPredef.h"
+#include "MMBuffer.h"
 
 #include <cstdint>