diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 8f25c521c6..8fc0449ff9 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -2258,6 +2258,14 @@
                 functionality specific to the respective SDK machine or target
                 case.</para></listitem>
         </itemizedlist>
+        <note><title>Warning</title>
+            When creating a recipe, you must follow this naming convention:
+            <literallayout class='monospaced'>
+     nativesdk-<replaceable>myrecipe</replaceable>.bb
+            </literallayout>
+            Not doing so can lead to subtle problems because code exists
+            that depends on the naming convention.
+        </note>
     </para>
 
     <para>