diff --git a/part3intro/toolchaintechnotes.xml b/part3intro/toolchaintechnotes.xml
index 3bc54842a..c8abc98bc 100644
--- a/part3intro/toolchaintechnotes.xml
+++ b/part3intro/toolchaintechnotes.xml
@@ -37,6 +37,15 @@
 
     <title>About Cross-Compilation</title>
 
+    <note>
+      <para>
+        The LFS book is not, and does not contain a general tutorial to
+        build a cross (or native) toolchain. Don't use the command in the
+        book for a cross toolchain which will be used for some purpose other
+        than building LFS, unless you really understand what you are doing.
+      </para>
+    </note>
+
     <para>Cross-compilation involves some concepts that deserve a section on
     their own. Although this section may be omitted in a first reading,
     coming back to it later will be beneficial to your full understanding of