diff --git a/cpu.cpp b/cpu.cpp
index 7214bf98..5a160529 100644
--- a/cpu.cpp
+++ b/cpu.cpp
@@ -336,7 +336,7 @@ void DetectX86Features()
 		(
 			// "xgetbv" : "=a"(a), "=d"(d) : "c"(0) :
 			".byte 0x0f, 0x01, 0xd0"   "\n\t"
-			: "=a"(a), "=d"(d) : "c"(0) :
+			: "=a"(a), "=d"(d) : "c"(0) : "cc"
 		);
 		word64 xcr0 = a | static_cast<word64>(d) << 32;
 		g_hasAVX = (xcr0 & YMM_FLAG) == YMM_FLAG;
diff --git a/sm4_simd.cpp b/sm4_simd.cpp
index 64a10b09..99bafa41 100644
--- a/sm4_simd.cpp
+++ b/sm4_simd.cpp
@@ -22,6 +22,7 @@
 
 #if (CRYPTOPP_AESNI_AVAILABLE)
 # include "adv_simd.h"
+# include <emmintrin.h>
 # include <tmmintrin.h>
 # include <wmmintrin.h>
 #endif