diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 2497c7d109..091e0b742e 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -4030,7 +4030,7 @@
             </info>
             <glossdef>
                 <para>
-                    Specifies the prefix for the cross-comile toolchain.
+                    Specifies the prefix for the cross-compile toolchain.
                     <filename>HOST_PREFIX</filename> is normally the same as
                     <link linkend='var-TARGET_PREFIX'><filename>TARGET_PREFIX</filename></link>.
                 </para>
@@ -9493,13 +9493,16 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
 
         <glossentry id='var-SOURCE_MIRROR_FETCH'><glossterm><imagedata fileref="figures/define-generic.png" />SOURCE_MIRROR_FETCH</glossterm>
             <info>
-                SOURCE_MIRROR_FETCH[doc] = "Switch marking build as source fetcher. Used to skip COMPATIBLE_* checking."
+                SOURCE_MIRROR_FETCH[doc] = "Set as part of a source mirror generation script to skip COMPATIBLE_MACHINE and COMPATIBLE_HOST checks."
             </info>
             <glossdef>
                 <para>
-                    Switch marking build as source fetcher.
-                    This variable is used to skip
-                    <filename>COMPATIBLE_*</filename> checking.
+                    Setting this variable within a source mirror generation
+                    script causes the OpenEmbedded build system to skip
+                    <link linkend='var-COMPATIBLE_MACHINE'><filename>COMPATIBLE_MACHINE</filename></link>
+                    and
+                    <link linkend='var-COMPATIBLE_HOST'><filename>COMPATIBLE_HOST</filename></link>
+                    checks.
                 </para>
             </glossdef>
         </glossentry>