diff --git a/nfuzz/README.md b/nfuzz/README.md
index aa9df3e05..8ca9e3a40 100644
--- a/nfuzz/README.md
+++ b/nfuzz/README.md
@@ -26,6 +26,7 @@ additional Nim arguments, e.g.:
 ```bash
 make libnfuzz.a NIMFLAGS="--cc:clang --passC:'-fsanitize=fuzzer' --passL='-fsanitize=fuzzer'"
 ```
+To disable BLS verification on deserialization of SSZ objects add `-d:ssz_testing` to the NIMFLAGS.
 
 Other useful options might include: `--clang.path:<path>`, `--clang.exe:<exe>`, `--clang.linkerexe:<exe>`.