diff --git a/blake2.cpp b/blake2.cpp
index a18de170..64048958 100644
--- a/blake2.cpp
+++ b/blake2.cpp
@@ -3441,6 +3441,7 @@ static const int LANE_L64 = 0;
 
 static void BLAKE2_NEON_Compress32(const byte* input, BLAKE2_State<word32, false>& state)
 {
+  assert(IsAlignedOn(input,GetAlignmentOf<uint8_t*>()));
   assert(IsAlignedOn(&state.h[0],GetAlignmentOf<uint32x4_t>()));
   assert(IsAlignedOn(&state.h[4],GetAlignmentOf<uint32x4_t>()));
   assert(IsAlignedOn(&state.t[0],GetAlignmentOf<uint32x4_t>()));
@@ -3946,7 +3947,7 @@ static void BLAKE2_NEON_Compress32(const byte* input, BLAKE2_State<word32, false
 
 static void BLAKE2_NEON_Compress64(const byte* input, BLAKE2_State<word64, true>& state)
 {
-  assert(IsAlignedOn(input,GetAlignmentOf<uint8x16_t>()));
+  assert(IsAlignedOn(input,GetAlignmentOf<uint8_t*>()));
   assert(IsAlignedOn(&state.h[0],GetAlignmentOf<uint64x2_t>()));
   assert(IsAlignedOn(&state.h[4],GetAlignmentOf<uint64x2_t>()));
   assert(IsAlignedOn(&state.t[0],GetAlignmentOf<uint64x2_t>()));