diff --git a/rijndael-simd.cpp b/rijndael-simd.cpp
index 60304a71..88f46a55 100644
--- a/rijndael-simd.cpp
+++ b/rijndael-simd.cpp
@@ -160,9 +160,9 @@ bool CPU_ProbeAES()
 #if (CRYPTOPP_ARM_AES_AVAILABLE)
 
 #if defined(IS_LITTLE_ENDIAN)
-const word32 s_one[] = {0, 0, 0, 1<<24};
+const word32 s_one[] = {0, 0, 0, 1<<24};  // uint32x4_t
 #else
-const word32 s_one[] = {1, 0, 0, 0};
+const word32 s_one[] = {0, 0, 0, 1};      // uint32x4_t
 #endif
 
 inline void ARMV8_Enc_Block(uint8x16_t &block, const word32 *subkeys, unsigned int rounds)