diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index e2d971e7fc..a073746b66 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -5862,7 +5862,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
                     Specifies the kernel version for the U-Boot image.
                     For example:
                     <literallayout class='monospaced'>
-     UBOOT_LOCALVERSION = "yocto-standard"
+     UBOOT_LOCALVERSION = "-yocto-standard"
                     </literallayout>
                 </para>
             </glossdef>
@@ -5882,6 +5882,21 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
             </glossdef>
         </glossentry>
 
+        <glossentry id='var-UBOOT_SUFFIX'><glossterm>UBOOT_SUFFIX</glossterm>
+            <glossdef>
+                <para>
+                    Points to the generated U-Boot extension.
+                    For example, <filename>u-boot.sb</filename> has a
+                    <filename>.sb</filename> extension.
+                </para>
+
+                <para>
+                    The default U-Boot extension is
+                    <filename>.bin</filename>
+                </para>
+            </glossdef>
+        </glossentry>
+
         <glossentry id='var-UBOOT_TARGET'><glossterm>UBOOT_TARGET</glossterm>
             <glossdef>
                 <para>