diff --git a/Builds/CMake/RippledCore.cmake b/Builds/CMake/RippledCore.cmake
index ec9e23663..10af3b310 100644
--- a/Builds/CMake/RippledCore.cmake
+++ b/Builds/CMake/RippledCore.cmake
@@ -50,7 +50,6 @@ target_sources (xrpl_core PRIVATE
   src/ripple/basics/impl/FileUtilities.cpp
   src/ripple/basics/impl/IOUAmount.cpp
   src/ripple/basics/impl/Log.cpp
-  src/ripple/basics/impl/strHex.cpp
   src/ripple/basics/impl/StringUtilities.cpp
   #[===============================[
     main sources:
diff --git a/src/ripple/basics/StringUtilities.h b/src/ripple/basics/StringUtilities.h
index 81e9ae826..48de772ca 100644
--- a/src/ripple/basics/StringUtilities.h
+++ b/src/ripple/basics/StringUtilities.h
@@ -25,6 +25,7 @@
 
 #include <boost/format.hpp>
 #include <boost/utility/string_view.hpp>
+#include <array>
 #include <optional>
 #include <sstream>
 #include <string>
@@ -48,6 +49,24 @@ template <class Iterator>
 std::optional<Blob>
 strUnHex(std::size_t strSize, Iterator begin, Iterator end)
 {
+    static constexpr std::array<int, 256> const unxtab = []() {
+        std::array<int, 256> t{};
+
+        for (auto& x : t)
+            x = -1;
+
+        for (int i = 0; i < 10; ++i)
+            t['0' + i] = i;
+
+        for (int i = 0; i < 6; ++i)
+        {
+            t['A' + i] = 10 + i;
+            t['a' + i] = 10 + i;
+        }
+
+        return t;
+    }();
+
     Blob out;
 
     out.reserve((strSize + 1) / 2);
@@ -56,25 +75,22 @@ strUnHex(std::size_t strSize, Iterator begin, Iterator end)
 
     if (strSize & 1)
     {
-        int c = charUnHex(*iter);
+        int c = unxtab[*iter++];
 
         if (c < 0)
             return {};
 
         out.push_back(c);
-        ++iter;
     }
 
     while (iter != end)
     {
-        int cHigh = charUnHex(*iter);
-        ++iter;
+        int cHigh = unxtab[*iter++];
 
         if (cHigh < 0)
             return {};
 
-        int cLow = charUnHex(*iter);
-        ++iter;
+        int cLow = unxtab[*iter++];
 
         if (cLow < 0)
             return {};
diff --git a/src/ripple/basics/impl/strHex.cpp b/src/ripple/basics/impl/strHex.cpp
deleted file mode 100644
index 084493af5..000000000
--- a/src/ripple/basics/impl/strHex.cpp
+++ /dev/null
@@ -1,49 +0,0 @@
-//------------------------------------------------------------------------------
-/*
-    This file is part of rippled: https://github.com/ripple/rippled
-    Copyright (c) 2012, 2013 Ripple Labs Inc.
-
-    Permission to use, copy, modify, and/or distribute this software for any
-    purpose  with  or without fee is hereby granted, provided that the above
-    copyright notice and this permission notice appear in all copies.
-
-    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
-    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
-    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-//==============================================================================
-
-#include <ripple/basics/strHex.h>
-#include <array>
-
-namespace ripple {
-
-int
-charUnHex(unsigned char c)
-{
-    static constexpr std::array<int, 256> const xtab = []() {
-        std::array<int, 256> t{};
-
-        for (auto& x : t)
-            x = -1;
-
-        for (int i = 0; i < 10; ++i)
-            t['0' + i] = i;
-
-        for (int i = 0; i < 6; ++i)
-        {
-            t['A' + i] = 10 + i;
-            t['a' + i] = 10 + i;
-        }
-
-        return t;
-    }();
-
-    return xtab[c];
-}
-
-}  // namespace ripple
diff --git a/src/ripple/basics/strHex.h b/src/ripple/basics/strHex.h
index e48ea9215..257fb540b 100644
--- a/src/ripple/basics/strHex.h
+++ b/src/ripple/basics/strHex.h
@@ -25,21 +25,6 @@
 
 namespace ripple {
 
-/** @{ */
-/** Converts a hex digit to the corresponding integer
-    @param cDigit one of '0'-'9', 'A'-'F' or 'a'-'f'
-    @return an integer from 0 to 15 on success; -1 on failure.
-*/
-int
-charUnHex(unsigned char c);
-
-inline int
-charUnHex(char c)
-{
-    return charUnHex(static_cast<unsigned char>(c));
-}
-/** @} */
-
 template <class FwdIt>
 std::string
 strHex(FwdIt begin, FwdIt end)