diff --git a/%5BTA%5D-JOJ-preparation-and-testing.md b/%5BTA%5D-JOJ-preparation-and-testing.md
index fc64af4..52f53d1 100644
--- a/%5BTA%5D-JOJ-preparation-and-testing.md
+++ b/%5BTA%5D-JOJ-preparation-and-testing.md
@@ -191,4 +191,10 @@ jobs:
 
 According to our current observation, MemorySanitizer with `iostream` linked with uninstrumented libc++ will not work. Not sure about other libraries/headers.
 
-Explanation: https://github.com/google/sanitizers/wiki/MemorySanitizerLibcxxHowTo
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+Explanation: https://github.com/google/sanitizers/wiki/MemorySanitizerLibcxxHowTo
+
+### Test sanitizer setup
+
+```
+nm -an binary | grep san
+```
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