diff --git a/gcm.cpp b/gcm.cpp
index 18067eac..9ea384dc 100644
--- a/gcm.cpp
+++ b/gcm.cpp
@@ -80,7 +80,10 @@ __m128i _mm_clmulepi64_si128(const __m128i &a, const __m128i &b, int i)
 inline static void SSE2_Xor16(byte *a, const byte *b, const byte *c)
 {
 #if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
-	*(__m128i *)a = _mm_xor_si128(*(__m128i *)b, *(__m128i *)c);
+	assert(IsAlignedOn(a,GetAlignmentOf<__m128i>()));
+	assert(IsAlignedOn(b,GetAlignmentOf<__m128i>()));
+	assert(IsAlignedOn(c,GetAlignmentOf<__m128i>()));
+	*(__m128i *)(void *)a = _mm_xor_si128(*(__m128i *)(void *)b, *(__m128i *)(void *)c);
 #else
 	asm ("movdqa %1, %%xmm0; pxor %2, %%xmm0; movdqa %%xmm0, %0;" : "=m" (a[0]) : "m"(b[0]), "m"(c[0]));
 #endif
diff --git a/shark.cpp b/shark.cpp
index 592d0d91..8721574b 100644
--- a/shark.cpp
+++ b/shark.cpp
@@ -96,7 +96,7 @@ template <const byte *sbox, const ArrayOf256Word64s *cbox>
 struct SharkProcessAndXorBlock{		// VC60 workaround: problem with template functions
 inline SharkProcessAndXorBlock(const word64 *roundKeys, unsigned int rounds, const byte *inBlock, const byte *xorBlock, byte *outBlock)
 {
-	assert(IsAlignedOn(input,GetAlignmentOf<word64>()));
+	assert(IsAlignedOn(inBlock,GetAlignmentOf<word64>()));
 	word64 tmp = *(word64 *)(void *)inBlock ^ roundKeys[0];
 
 	ByteOrder order = GetNativeByteOrder();
@@ -125,7 +125,7 @@ inline SharkProcessAndXorBlock(const word64 *roundKeys, unsigned int rounds, con
 		(sbox[GETBYTE(tmp, 1)])
 		(sbox[GETBYTE(tmp, 0)]);
 
-	assert(IsAlignedOn(output,GetAlignmentOf<word64>()));
+	assert(IsAlignedOn(outBlock,GetAlignmentOf<word64>()));
 	*(word64 *)(void *)outBlock ^= roundKeys[rounds];
 }};
 
diff --git a/tea.cpp b/tea.cpp
index 4597d16d..871a00b3 100644
--- a/tea.cpp
+++ b/tea.cpp
@@ -106,9 +106,12 @@ void XTEA::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, by
 void BTEA::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
 {
 	CRYPTOPP_UNUSED(xorBlock);
+	assert(IsAlignedOn(inBlock,GetAlignmentOf<word32>()));
+	assert(IsAlignedOn(outBlock,GetAlignmentOf<word32>()));
+
 	unsigned int n = m_blockSize / 4;
-	word32 *v = (word32*)outBlock;
-	ConditionalByteReverse(BIG_ENDIAN_ORDER, v, (const word32*)inBlock, m_blockSize);
+	word32 *v = (word32*)(void *)outBlock;
+	ConditionalByteReverse(BIG_ENDIAN_ORDER, v, (const word32*)(void *)inBlock, m_blockSize);
 
 	word32 y = v[0], z = v[n-1], e;
 	word32 p, q = 6+52/n;
@@ -133,9 +136,12 @@ void BTEA::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, by
 void BTEA::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
 {
 	CRYPTOPP_UNUSED(xorBlock);
+	assert(IsAlignedOn(inBlock,GetAlignmentOf<word32>()));
+	assert(IsAlignedOn(outBlock,GetAlignmentOf<word32>()));
+
 	unsigned int n = m_blockSize / 4;
-	word32 *v = (word32*)outBlock;
-	ConditionalByteReverse(BIG_ENDIAN_ORDER, v, (const word32*)inBlock, m_blockSize);
+	word32 *v = (word32*)(void *)outBlock;
+	ConditionalByteReverse(BIG_ENDIAN_ORDER, v, (const word32*)(void *)inBlock, m_blockSize);
 
 	word32 y = v[0], z = v[n-1], e;
 	word32 p, q = 6+52/n;