diff --git a/compiler.rst b/compiler.rst
--- a/compiler.rst
+++ b/compiler.rst
@@ -389,16 +389,11 @@
 But you will also need to change the 'compiler' package.  The key files
 to do that are Lib/compiler/pyassem.py and Lib/compiler/pycodegen.py .
 
-If you make a change here that can affect the output of bytecode that
-is already in existence and you do not change the magic number constantly, make
-sure to delete your old .py(c|o) files!  Even though you will end up changing
-the magic number if you change the bytecode, while you are debugging your work
-you will be changing the bytecode output without constantly bumping up the
-magic number.  This means you end up with stale .pyc files that will not be
-recreated.  Running
-``find . -name '*.py[co]' -exec rm -f {} ';'`` should delete all .pyc files you
-have, forcing new ones to be created and thus allow you test out your new
-bytecode properly.
+Any time you make changes that affect the output of bytecode you will need to
+update the magic number as well, otherwise Python will reuse your old .pyc
+files and you will not be able to test your new bytecode properly. If you do
+not wish to constantly bump the magic number you can just delete the old .pyc
+files each time by running ``find . -name '*.py[co]' -exec rm -f {} ';'``.
 
 
 Code Objects