diff --git a/Include/BaseInc/BaseType.h b/Include/BaseInc/BaseType.h
index 0a10a6ef70ee00144ec447e894e78b09217dc8c7..f29d45c7063c1c13593ff4216ba0f32675bd7fca 100644
--- a/Include/BaseInc/BaseType.h
+++ b/Include/BaseInc/BaseType.h
@@ -13,7 +13,7 @@ typedef unsigned int U32;
 typedef unsigned long U64;
 
 // 有符号整数类型
-typedef char S8;
+typedef signed char S8;
 typedef short S16;
 typedef int S32;
 typedef long S64;