diff --git a/libfreerdp/core/orders.c b/libfreerdp/core/orders.c
index f14fb8630..a201f2fb9 100644
--- a/libfreerdp/core/orders.c
+++ b/libfreerdp/core/orders.c
@@ -866,7 +866,7 @@ static INLINE BOOL update_read_delta(wStream* s, INT32* value)
 	Stream_Read_UINT8(s, byte);
 
 	if (byte & 0x40)
-		uvalue = (byte | ((~0x3F) & 0xFF));
+		uvalue = (byte | ~0x3F);
 	else
 		uvalue = (byte & 0x3F);