diff --git a/tests/unit/security/key-params.t.cpp b/tests/unit/security/key-params.t.cpp
index 78f3a4e..b2dafcd 100644
--- a/tests/unit/security/key-params.t.cpp
+++ b/tests/unit/security/key-params.t.cpp
@@ -124,7 +124,7 @@
   BOOST_CHECK_EQUAL(params2.getKeyIdType(), KeyIdType::USER_SPECIFIED);
   BOOST_CHECK_EQUAL(params2.getKeyId(), keyId);
 
-  BOOST_CHECK_THROW(HmacKeyParams(keyId, 192), KeyParams::Error); // too short
+  BOOST_CHECK_THROW(HmacKeyParams(keyId, 0), KeyParams::Error);
   BOOST_CHECK_THROW(HmacKeyParams(keyId, 300), KeyParams::Error); // not a multiple of 8
 
   HmacKeyParams params3;