diff --git a/tests/unit_tests/hmac_keccak.cpp b/tests/unit_tests/hmac_keccak.cpp
index 3898d4a7a..ec7c90dbe 100644
--- a/tests/unit_tests/hmac_keccak.cpp
+++ b/tests/unit_tests/hmac_keccak.cpp
@@ -123,7 +123,7 @@ static void test_keccak_hmac(const size_t * chunks)
 }
 
 
-TEST(keccak_hmac, )
+TEST(keccak_hmac, nullptr)
 {
   test_keccak_hmac(nullptr);
 }
diff --git a/tests/unit_tests/keccak.cpp b/tests/unit_tests/keccak.cpp
index f4d41a8fa..a869fbaec 100644
--- a/tests/unit_tests/keccak.cpp
+++ b/tests/unit_tests/keccak.cpp
@@ -54,10 +54,6 @@ extern "C" {
   keccak_finish(&ctx, md1); \
   ASSERT_EQ(memcmp(md0, md1, 32), 0);
 
-TEST(keccak, )
-{
-}
-
 TEST(keccak, 0_and_0)
 {
   static const size_t chunks[] = {0};