diff --git a/src/libsodium/include/sodium/private/common.h b/src/libsodium/include/sodium/private/common.h
index 4d892f92..1d615557 100644
--- a/src/libsodium/include/sodium/private/common.h
+++ b/src/libsodium/include/sodium/private/common.h
@@ -230,7 +230,7 @@ xor_buf(unsigned char *out, const unsigned char *in, size_t n)
 
 #ifdef _MSC_VER
 
-# if defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86)
+# if defined(_M_X64) || defined(_M_IX86)
 #  include <intrin.h>
 
 #  define HAVE_INTRIN_H    1
diff --git a/src/libsodium/include/sodium/private/sse2_64_32.h b/src/libsodium/include/sodium/private/sse2_64_32.h
index fc994bd1..b0b66038 100644
--- a/src/libsodium/include/sodium/private/sse2_64_32.h
+++ b/src/libsodium/include/sodium/private/sse2_64_32.h
@@ -9,7 +9,7 @@
 
 #if defined(HAVE_EMMINTRIN_H) && \
     !(defined(__amd64) || defined(__amd64__) || defined(__x86_64__) || \
-      defined(_M_X64) || defined(_M_AMD64))
+      defined(_M_X64))
 
 # include <emmintrin.h>
 # include <stdint.h>
diff --git a/src/libsodium/sodium/runtime.c b/src/libsodium/sodium/runtime.c
index c3fc2e03..bd3cf5fc 100644
--- a/src/libsodium/sodium/runtime.c
+++ b/src/libsodium/sodium/runtime.c
@@ -150,8 +150,7 @@ _sodium_runtime_arm_cpu_features(CPUFeatures * const cpu_features)
 static void
 _cpuid(unsigned int cpu_info[4U], const unsigned int cpu_info_type)
 {
-#if defined(_MSC_VER) && \
-    (defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86))
+#if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86))
     __cpuid((int *) cpu_info, cpu_info_type);
 #elif defined(HAVE_CPUID)
     cpu_info[0] = cpu_info[1] = cpu_info[2] = cpu_info[3] = 0;