diff --git a/man/groupadd.8.xml b/man/groupadd.8.xml
index 61a548f7..9abf159a 100644
--- a/man/groupadd.8.xml
+++ b/man/groupadd.8.xml
@@ -230,7 +230,7 @@
 	</term>
 	<listitem>
 	  <para>
-	    A list of usernames to add as members of the group.
+	    A comma-separated list of usernames to add as members of the group.
 	  </para>
 	  <para>
 	    The default behavior (if the <option>-g</option>,
diff --git a/man/groupmod.8.xml b/man/groupmod.8.xml
index 9b6aed5f..6e2dc796 100644
--- a/man/groupmod.8.xml
+++ b/man/groupmod.8.xml
@@ -195,7 +195,7 @@
 	</term>
 	<listitem>
 	  <para>
-	    A list of usernames to add as members of the group.
+	    A comma-separated list of usernames to add as members of the group.
 	  </para>
 	  <para>
 	    The default behavior (if the <option>-g</option>,