diff --git a/lib/reg/doc/lookup_flags.xml b/lib/reg/doc/lookup_flags.xml
index f0efdcefe6d..d1d739ba656 100644
--- a/lib/reg/doc/lookup_flags.xml
+++ b/lib/reg/doc/lookup_flags.xml
@@ -1,4 +1,5 @@
-<para><emphasis>flags (string, optional)</emphasis></para>
+<para><emphasis>flags (string, optional) - string composed of one or more of
+		the following flags, comma-separated:</emphasis></para>
 
 <itemizedlist>
 <listitem>
diff --git a/modules/mid_registrar/doc/mid_registrar_admin.xml b/modules/mid_registrar/doc/mid_registrar_admin.xml
index 85aa061acf8..d27ea5761bb 100644
--- a/modules/mid_registrar/doc/mid_registrar_admin.xml
+++ b/modules/mid_registrar/doc/mid_registrar_admin.xml
@@ -859,8 +859,8 @@ modparam("mid_registrar", "gruu_secret", "my_secret")
 		</listitem>
 		<listitem>
 			<para>
-			<emphasis>flags</emphasis> (string, optional) - string of
-			the following flags:
+			<emphasis>flags</emphasis> (string, optional) - string composed of
+				one or more of the following flags, comma-separated:
 			</para>
 			<itemizedlist>
 				&save_common_flags;
diff --git a/modules/registrar/doc/registrar_admin.xml b/modules/registrar/doc/registrar_admin.xml
index ab04ae9fb13..b7ca87d3f04 100644
--- a/modules/registrar/doc/registrar_admin.xml
+++ b/modules/registrar/doc/registrar_admin.xml
@@ -481,8 +481,8 @@ modparam("registrar", "disable_gruu", 0)
 		</listitem>
 		<listitem>
 			<para>
-			<emphasis>flags (string, optional)</emphasis> - string of
-			the following flags:
+			<emphasis>flags (string, optional)</emphasis> - string composed of
+				one or more of the following flags, comma-separated:
 			</para>
 			<itemizedlist>
 				&save_common_flags;