1 files changed, 3 insertions, 3 deletions
diff --git a/src/bignum.h b/src/bignum.h
index 582e6f1517..e9d9007d3d 100644
--- a/src/bignum.h
+++ b/src/bignum.h
@@ -347,13 +347,13 @@ public:
             psz++;
 
         // hex string to bignum
-        static const signed char phexdigit[256] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, 0,0xa,0xb,0xc,0xd,0xe,0xf,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0xa,0xb,0xc,0xd,0xe,0xf,0,0,0,0,0,0,0,0,0 };
         *this = 0;
-        while (isxdigit(*psz))
+        int n;
+        while ((n = HexDigit(*psz)) != -1)
         {
             *this <<= 4;
-            int n = phexdigit[(unsigned char)*psz++];
             *this += n;
+            ++psz;
         }
         if (fNegative)
             *this = 0 - *this;