diff --git a/api-ref/src/wadls/volume-api/src/v2/common.ent b/api-ref/src/wadls/volume-api/src/v2/common.ent
index 3babf3f4e..0ff21ff0f 100644
--- a/api-ref/src/wadls/volume-api/src/v2/common.ent
+++ b/api-ref/src/wadls/volume-api/src/v2/common.ent
@@ -334,7 +334,7 @@
     <wadl:doc xmlns="http://docbook.org/ns/docbook"
        xmlns:wadl="http://wadl.dev.java.net/2009/02"
        xml:lang="EN">
-       <para>Maximum total amount of volumes (GB).</para></wadl:doc>
+       <para>Maximum total amount of volumes, in gibibytes (GiB).</para></wadl:doc>
 </param>
 <param name="totalGigabytesUsed" style="plain" required="true"
    xmlns="http://wadl.dev.java.net/2009/02"
@@ -342,7 +342,7 @@
     <wadl:doc xmlns="http://docbook.org/ns/docbook"
        xmlns:wadl="http://wadl.dev.java.net/2009/02"
        xml:lang="EN">
-       <para>Total number of GBs used.</para></wadl:doc>
+       <para>Total number of gibibytes (GiB) used.</para></wadl:doc>
 </param>
 <param name="maxTotalSnapshots" style="plain" required="true"
    xmlns="http://wadl.dev.java.net/2009/02"
@@ -414,7 +414,7 @@
        xmlns:wadl="http://wadl.dev.java.net/2009/02"
        xml:lang="EN">
        <para>The size of the volume, in
-                        GBs.</para></wadl:doc>
+                        gibibytes (GiB).</para></wadl:doc>
 </param>
 <param xmlns="http://wadl.dev.java.net/2009/02"
  name="name" style="plain"
@@ -576,5 +576,5 @@
     <wadl:doc xmlns="http://docbook.org/ns/docbook"
        xmlns:wadl="http://wadl.dev.java.net/2009/02"
        xml:lang="EN">
-       <para>The size of the volume, in GBs.</para></wadl:doc>
+       <para>The size of the volume, in gibibytes (GiB).</para></wadl:doc>
 </param>' >
diff --git a/api-ref/src/wadls/volume-api/src/v2/os-volume-manage-v2.wadl b/api-ref/src/wadls/volume-api/src/v2/os-volume-manage-v2.wadl
index e25fbeabb..38f3f6cc2 100644
--- a/api-ref/src/wadls/volume-api/src/v2/os-volume-manage-v2.wadl
+++ b/api-ref/src/wadls/volume-api/src/v2/os-volume-manage-v2.wadl
@@ -125,7 +125,7 @@
                     create API call. The size of the volume is chosen
                     by inspecting the size of the existing storage
                     volume and rounding up to the next
-                    gigabyte.</para>
+                    gibibyte (GiB).</para>
                     <xsdxt:code
                         href="api_samples/os-manage-existing/manage_existing_response.json"
                     />
diff --git a/api-ref/src/wadls/volume-api/src/v2/volume-api-v2.wadl b/api-ref/src/wadls/volume-api/src/v2/volume-api-v2.wadl
index 4727a0884..c464e4a05 100644
--- a/api-ref/src/wadls/volume-api/src/v2/volume-api-v2.wadl
+++ b/api-ref/src/wadls/volume-api/src/v2/volume-api-v2.wadl
@@ -456,7 +456,10 @@
     <method name="POST" id="extendVolume">
         <wadl:doc xmlns="http://docbook.org/ns/docbook" xml:lang="EN"
             title="Extend volume">
-            <para role="shortdesc">Extends the size of a specified volume to a new size requested in GB.</para>
+            <para role="shortdesc">
+                Extends the size of a specified volume to a new size requested
+                in gibibytes (GiB).
+            </para>
             <para>Preconditions</para>
             <itemizedlist>
                 <listitem><para>Volume status must be <code>available</code>.</para></listitem>
@@ -485,7 +488,7 @@
                 <param name="new_size" style="plain"
                     type="xsd:int" required="true">
                     <wadl:doc xmlns="http://docbook.org/ns/docbook"
-                        xml:lang="EN"><para>The new size (in GB) of the volume.</para></wadl:doc>
+                        xml:lang="EN"><para>The new size, in gibibytes (GiB), of the volume.</para></wadl:doc>
                 </param>
             </representation>
         </request>
@@ -739,7 +742,7 @@
                 <wadl:doc xmlns="http://docbook.org/ns/docbook"
                     xml:lang="EN">
                     <para>The size of the volume, in
-                        GBs.</para></wadl:doc>
+                        gibibytes (GiB).</para></wadl:doc>
             </param>
             <representation mediaType="application/xml">
                 <wadl:doc xmlns="http://docbook.org/ns/docbook"