diff --git a/chapter08/util-linux.xml b/chapter08/util-linux.xml
index 6c37af728..b49168396 100644
--- a/chapter08/util-linux.xml
+++ b/chapter08/util-linux.xml
@@ -1230,7 +1230,8 @@ su tester -c "make -k check"</userinput></screen>
           <para>Creates new UUIDs. Each new UUID is a random number likely to be
           unique among all UUIDs created, on the local system and on other
           systems, in the past and in the future, with extremely high
-          probability (~340 trillion trillion trillion unique UUIDs are possible)</para>
+          probability (2<superscript>128</superscript> UUIDs are
+          possible)</para>
           <indexterm zone="ch-system-util-linux uuidgen">
             <primary sortas="b-uuidgen">uuidgen</primary>
           </indexterm>