diff --git a/DuetPkg/EfiLdr/TianoDecompress.c b/DuetPkg/EfiLdr/TianoDecompress.c
index cac9938146..f2f37bd448 100644
--- a/DuetPkg/EfiLdr/TianoDecompress.c
+++ b/DuetPkg/EfiLdr/TianoDecompress.c
@@ -26,7 +26,6 @@ Abstract:
 #define MAXMATCH  256
 #define THRESHOLD 3
 #define CODE_BIT  16
-#define UINT8_MAX 0xff
 #define BAD_TABLE - 1
 
 //
@@ -614,7 +613,7 @@ Returns: (VOID)
       //
       // Process a Pointer
       //
-      CharC       = (UINT16) (CharC - (UINT8_MAX + 1 - THRESHOLD));
+      CharC       = (UINT16) (CharC - (BIT8 - THRESHOLD));
 
       BytesRemain = CharC;