diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index e7e9942b3b..a96ccfd652 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -881,7 +881,8 @@
         <itemizedlist>
             <listitem><para>
                 <link linkend='var-INITRD'><filename>INITRD</filename></link>:
-                Indicates a filesystem image to use as an initrd (optional).
+                Indicates list of filesystem images to concatenate and use
+                as an initial RAM disk (initrd) (optional).
                 </para></listitem>
             <listitem><para>
                 <link linkend='var-ROOTFS'><filename>ROOTFS</filename></link>:
@@ -2864,8 +2865,8 @@
         The class supports the following variables:
         <itemizedlist>
             <listitem><para><emphasis><link linkend='var-INITRD'><filename>INITRD</filename></link>:</emphasis>
-                Indicates a filesystem image to use as an initial RAM disk
-                (initrd).
+                Indicates list of filesystem images to concatenate and use as
+                an initial RAM disk (initrd).
                 This variable is optional.</para></listitem>
             <listitem><para><emphasis><link linkend='var-ROOTFS'><filename>ROOTFS</filename></link>:</emphasis>
                 Indicates a filesystem image to include as the root filesystem.
diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 034eebe0e1..7ea753df71 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -4020,8 +4020,8 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
         <glossentry id='var-INITRD'><glossterm>INITRD</glossterm>
             <glossdef>
                 <para>
-                    Indicates a filesystem image to use as an initial RAM
-                    disk (<filename>initrd</filename>).
+                    Indicates list of filesystem images to concatenate and use
+                    as an initial RAM disk (<filename>initrd</filename>).
                 </para>
 
                 <para>