diff --git a/README.md b/README.md
index 80ca8a0cc..aac8b5b1c 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ What use Prog8 provide?
 
 - "c64": Commodore-64  (6510 CPU = almost a 6502)  premium support.
 - "cx16": [CommanderX16](https://www.commanderx16.com)  (65c02 CPU)  experimental support.
-
+- If you only use standard kernel and prog8 library routines, it is possible to compile the *exact same program* for both machines (just change the compiler target flag)!
 
 
 
diff --git a/docs/source/index.rst b/docs/source/index.rst
index fdcebf2e9..aa55250e6 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -126,6 +126,7 @@ Design principles and features
   the ability to easily write embedded assembly code directly in the program source code.
 - There are many built-in functions, such as ``sin``, ``cos``, ``rnd``, ``abs``, ``min``, ``max``, ``sqrt``, ``msb``, ``rol``, ``ror``, ``swap``, ``memset``, ``memcopy``, ``substr``, ``sort`` and ``reverse`` (and others)
 - Assembling the generated code into a program wil be done by an external cross-assembler tool.
+- If you only use standard kernel and prog8 library routines, it is possible to compile the *exact same program* for both machines (just change the compiler target flag)!
 
 
 .. _requirements:
diff --git a/docs/source/targetsystem.rst b/docs/source/targetsystem.rst
index 98ed20edc..ea18b6ad1 100644
--- a/docs/source/targetsystem.rst
+++ b/docs/source/targetsystem.rst
@@ -16,6 +16,9 @@ Currently there are two machines that are supported as compiler target (selectab
 
 This chapter explains the relevant system details of these machines.
 
+.. note::
+    If you only use standard kernel and prog8 library routines, it is possible to compile the *exact same program* for both machines (just change the compiler target flag)!
+
 
 Memory Model
 ============