diff --git a/datatest.cpp b/datatest.cpp
index 1fc76f43..29eddfa5 100644
--- a/datatest.cpp
+++ b/datatest.cpp
@@ -819,13 +819,6 @@ void TestSymmetricCipherWithInplaceEncryption(TestData &v, const NameValuePairs
 		}
 	}
 
-	// Most block ciphers don't specify BlockPaddingScheme. Kalyna uses it
-	// in test vectors. 0 is NoPadding, 1 is ZerosPadding, 2 is PkcsPadding,
-	// 3 is OneAndZerosPadding, etc. Note: The machinery is wired such that
-	// paddingScheme is effectively latched. An old paddingScheme may be
-	// unintentionally used in a subsequent test.
-	int paddingScheme = pairs.GetIntValueWithDefault(Name::BlockPaddingScheme(), 0);
-
 	const std::string plainText = GetDecodedDatum(v, "Plaintext");
 	const std::string cipherText = GetDecodedDatum(v, "Ciphertext");
 
diff --git a/hight.cpp b/hight.cpp
index b2aef6e8..c48e36f6 100644
--- a/hight.cpp
+++ b/hight.cpp
@@ -195,10 +195,10 @@ void HIGHT::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, b
         outBlock[5] = static_cast<byte>(m_xx[6] ^ xorBlock[5]);
         outBlock[7] = static_cast<byte>(m_xx[0] ^ xorBlock[7]);
 
-        outBlock[0] = static_cast<byte>(m_xx[1] + m_rkey[4] ^ xorBlock[0]);
-        outBlock[2] = static_cast<byte>(m_xx[3] ^ m_rkey[5] ^ xorBlock[2]);
-        outBlock[4] = static_cast<byte>(m_xx[5] + m_rkey[6] ^ xorBlock[4]);
-        outBlock[6] = static_cast<byte>(m_xx[7] ^ m_rkey[7] ^ xorBlock[6]);
+        outBlock[0] = static_cast<byte>((m_xx[1] + m_rkey[4]) ^ xorBlock[0]);
+        outBlock[2] = static_cast<byte>((m_xx[3] ^ m_rkey[5]) ^ xorBlock[2]);
+        outBlock[4] = static_cast<byte>((m_xx[5] + m_rkey[6]) ^ xorBlock[4]);
+        outBlock[6] = static_cast<byte>((m_xx[7] ^ m_rkey[7]) ^ xorBlock[6]);
     }
     else
     {
@@ -275,10 +275,10 @@ void HIGHT::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, b
         outBlock[5] = static_cast<byte>(m_xx[5] ^ xorBlock[5]);
         outBlock[7] = static_cast<byte>(m_xx[7] ^ xorBlock[7]);
 
-        outBlock[0] = static_cast<byte>(m_xx[0] - m_rkey[0] ^ xorBlock[0]);
-        outBlock[2] = static_cast<byte>(m_xx[2] ^ m_rkey[1] ^ xorBlock[2]);
-        outBlock[4] = static_cast<byte>(m_xx[4] - m_rkey[2] ^ xorBlock[4]);
-        outBlock[6] = static_cast<byte>(m_xx[6] ^ m_rkey[3] ^ xorBlock[6]);
+        outBlock[0] = static_cast<byte>((m_xx[0] - m_rkey[0]) ^ xorBlock[0]);
+        outBlock[2] = static_cast<byte>((m_xx[2] ^ m_rkey[1]) ^ xorBlock[2]);
+        outBlock[4] = static_cast<byte>((m_xx[4] - m_rkey[2]) ^ xorBlock[4]);
+        outBlock[6] = static_cast<byte>((m_xx[6] ^ m_rkey[3]) ^ xorBlock[6]);
     }
     else
     {
diff --git a/modes.cpp b/modes.cpp
index 8e4428e3..21e17263 100644
--- a/modes.cpp
+++ b/modes.cpp
@@ -81,7 +81,6 @@ void CFB_ModePolicy::CipherResynchronize(const byte *iv, size_t length)
 
 void CFB_ModePolicy::SetFeedbackSize(unsigned int feedbackSize)
 {
-	CRYPTOPP_ASSERT(feedbackSize >= 0);
 	CRYPTOPP_ASSERT(feedbackSize <= BlockSize());
 	if (feedbackSize > BlockSize())
 		throw InvalidArgument("CFB_Mode: invalid feedback size");