1 files changed, 2 insertions, 2 deletions
diff --git a/apps/include/modbus/mbproto.h b/apps/include/modbus/mbproto.h
index 786aaf403..24b0c98e7 100644
--- a/apps/include/modbus/mbproto.h
+++ b/apps/include/modbus/mbproto.h
@@ -69,11 +69,11 @@ PR_BEGIN_EXTERN_C
     MB_EX_GATEWAY_TGT_FAILED = 0x0B
 } eMBException;
 
-typedef         eMBException( *pxMBFunctionHandler ) ( UCHAR * pucFrame, USHORT * pusLength );
+typedef         eMBException( *pxMBFunctionHandler ) ( uint8_t * pucFrame, uint16_t * pusLength );
 
 typedef struct
 {
-    UCHAR           ucFunctionCode;
+    uint8_t           ucFunctionCode;
     pxMBFunctionHandler pxHandler;
 } xMBFunctionHandler;