diff --git a/user-guide/DITA-messages-details.xml b/user-guide/DITA-messages-details.xml
index 2add5353d..b1e1a9705 100644
--- a/user-guide/DITA-messages-details.xml
+++ b/user-guide/DITA-messages-details.xml
@@ -359,7 +359,7 @@
         <stentry conref="DITA-messages.xml#msgs/DOTJ071E-extra" conaction="pushreplace">
           <p>Ensure that the DITAVAL file exists. If more than one DITAVAL file is specified, ensure that
             the paths are separated using the separator character appropriate for your operating system
-            (semicolon <codeph>;</codeph> on Windows, or colon <codeph>:</codeph> on Mac or Linux).</p>
+            (semicolon <codeph>;</codeph> on Windows, or colon <codeph>:</codeph> on Linux or macOS).</p>
         </stentry>
       </strow>
       <strow>