diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 4eb61c5ba5..e3268a01f3 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -856,7 +856,7 @@
         <literallayout class='monospaced'>
      inherit extrausers
      EXTRA_USERS_PARAMS = "\
-         useradd -P 1876*18 root; \
+         usermod -P 1876*18 root; \
          "
         </literallayout>
     </para>