diff --git a/docs/architecture/psa-shared-memory.md b/docs/architecture/psa-shared-memory.md
index 9929573..dd2f87f 100644
--- a/docs/architecture/psa-shared-memory.md
+++ b/docs/architecture/psa-shared-memory.md
@@ -501,7 +501,9 @@
 * When `should_poison == 1`, this is equivalent to calling `VALGRIND_MAKE_MEM_NOACCESS(buffer, length)` or `ASAN_POISON_MEMORY_REGION(buffer, length)`.
 * When `should_poison == 0`, this is equivalent to calling `VALGRIND_MAKE_MEM_DEFINED(buffer, length)` or `ASAN_UNPOISON_MEMORY_REGION(buffer, length)`.
 
-We may choose one of two approaches:
+The PSA copying function must then have test hooks implemented as outlined in [Validation of copying by memory poisoning](#validation-of-copying-by-memory-poisoning).
+
+For test implementation, we may choose one of two approaches:
 * Use transparent allocation-based memory poisoning.
 * Use memory poisoning functions and a new testsuite.