diff --git a/reference/intl/intlchar.xml b/reference/intl/intlchar.xml
index 5021151da4..18230fe82e 100644
--- a/reference/intl/intlchar.xml
+++ b/reference/intl/intlchar.xml
@@ -54,6 +54,12 @@
      <varname linkend="intlchar.constants.codepoint-max">IntlChar::CODEPOINT_MAX</varname>
      <initializer>1114111</initializer>
     </fieldsynopsis>
+    <fieldsynopsis>
+     <modifier>const</modifier>
+     <type>float</type>
+     <varname linkend="intlchar.constants.no-numeric-value">IntlChar::NO_NUMERIC_VALUE</varname>
+     <initializer>-123456789</initializer>
+    </fieldsynopsis>
     <fieldsynopsis>
      <modifier>const</modifier>
      <type>integer</type>
@@ -3670,6 +3676,13 @@
      </listitem>
     </varlistentry>
 
+    <varlistentry xml:id="intlchar.constants.no-numeric-value">
+     <term><constant>IntlChar::NO_NUMERIC_VALUE</constant></term>
+     <listitem>
+      <para>Special value that is returned by <function>IntlChar::getNumericValue</function> when no numeric value is defined for a code point.</para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry xml:id="intlchar.constants.property-alphabetic">
      <term><constant>IntlChar::PROPERTY_ALPHABETIC</constant></term>
      <listitem>
diff --git a/reference/intl/intlchar/getnumericvalue.xml b/reference/intl/intlchar/getnumericvalue.xml
index 8a4e3b93f8..9c314a63f9 100644
--- a/reference/intl/intlchar/getnumericvalue.xml
+++ b/reference/intl/intlchar/getnumericvalue.xml
@@ -18,7 +18,7 @@
   </para>
   <para>
    For characters without any numeric values in the Unicode Character Database, this function will return
-   <type>float</type>(<literal>-123456789</literal>).
+   <constant>IntlChar::NO_NUMERIC_VALUE</constant>.
   </para>
  </refsect1>
 
@@ -38,7 +38,7 @@
   &reftitle.returnvalues;
   <para>
    Numeric value of <parameter>codepoint</parameter>,
-   or <type>float</type>(<literal>-123456789</literal>) if none is defined.
+   or <constant>IntlChar::NO_NUMERIC_VALUE</constant> if none is defined.
   </para>
  </refsect1>