diff --git a/tests/qht-bench.c b/tests/qht-bench.c
index 2089e2bed1..636750d39f 100644
--- a/tests/qht-bench.c
+++ b/tests/qht-bench.c
@@ -72,6 +72,7 @@ static const char commands_string[] =
     " -n = number of threads\n"
     "\n"
     " -o = offset at which keys start\n"
+    " -p = precompute hashes\n"
     "\n"
     " -g = set -s,-k,-K,-l,-r to the same value\n"
     " -s = initial size hint\n"