diff --git a/index.html b/index.html
index 493c95c2..fc8ac1b8 100644
--- a/index.html
+++ b/index.html
@@ -174,14 +174,14 @@ <h2>
           of the following components in the given order:
         </p>
         <ol>
-          <li>Optionally, a single U+002D HYPHEN-MINUS character (-), to
+          <li>Optionally, a single U+002D HYPHEN-MINUS code unit (-), to
           indicate that the amount is negative
           </li>
-          <li>One or more characters in the range U+0030 DIGIT ZERO (0) to
+          <li>One or more code units in the range U+0030 DIGIT ZERO (0) to
           U+0039 DIGIT NINE (9)
           </li>
-          <li>Optionally, a single U+002E FULL STOP character (.) followed by
-          one or more characters in the range U+0030 DIGIT ZERO (0) to U+0039
+          <li>Optionally, a single U+002E FULL STOP code unit (.) followed by
+          one or more code units in the range U+0030 DIGIT ZERO (0) to U+0039
           DIGIT NINE (9)
           </li>
         </ol>
@@ -392,7 +392,7 @@ <h2>
               monetary value</a>, then <a>throw</a> a <a>TypeError</a>;
               optionally informing the developer that the value is invalid.
               </li>
-              <li>If the first character of
+              <li>If the first code unit of
               <var>details</var>.<a>total</a>.<a data-lt=
               "PaymentItem.amount">amount</a>.<a data-lt=
               "PaymentCurrencyAmount.value">value</a> is U+002D HYPHEN-MINUS,
@@ -492,7 +492,7 @@ <h2>
                           optionally informing the developer that the value is
                           invalid.
                           </li>
-                          <li>If the first character of <var>value</var> is
+                          <li>If the first code unit of <var>value</var> is
                           U+002D HYPHEN-MINUS, then throw a <a>TypeError</a>,
                           optionally informing the developer that the value
                           can't be negative.
@@ -1046,7 +1046,7 @@ <h2>
           <p>
             <code>total</code> MUST be a non-negative value. This means that
             the <code>total.amount.value</code> field MUST NOT begin with a
-            U+002D HYPHEN-MINUS character.
+            U+002D HYPHEN-MINUS code unit.
           </p>
         </dd>
         <dt>
@@ -1944,7 +1944,7 @@ <h2>
                       <var>details</var>.<a data-lt="PaymentDetails.total">total</a>.<a data-lt="PaymentItem.amount">amount</a>.<a data-lt="PaymentCurrencyAmount.value">value</a>.
                     </li>
                     <li>If <var>value</var> is a <a>valid decimal monetary
-                    value</a> and the first character of <var>value</var> is
+                    value</a> and the first code unit of <var>value</var> is
                     <em>not</em> U+002D HYPHEN-MINUS, then copy
                     <var>details</var>.<a data-lt=
                     "PaymentDetails.total">total</a> to the <a data-lt=