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@@ -672,8 +672,9 @@ Here are some of the most important caveats for AFL:
 
     To work around this, you can comment out the relevant checks (see
     examples/libpng_no_checksum/ for inspiration); if this is not possible,
-    you can also write a postprocessor, as explained in
-    examples/post_library/ (with AFL_POST_LIBRARY)
+    you can also write a postprocessor, one of the hooks of custom mutators.
+    See [docs/custom_mutators.md](docs/custom_mutators.md) on how to use
+    `AFL_CUSTOM_MUTATOR_LIBRARY`
 
   - There are some unfortunate trade-offs with ASAN and 64-bit binaries. This
     isn't due to any specific fault of afl-fuzz; see [docs/notes_for_asan.md](docs/notes_for_asan.md)