diff --git a/host/include/x86_64/host/atomic128-ldst.h
b/host/include/x86_64/host/atomic128-ldst.h
index adc9332f91..d0240d4212 100644
--- a/host/include/x86_64/host/atomic128-ldst.h
+++ b/host/include/x86_64/host/atomic128-ldst.h
@@ -8,8 +8,8 @@
* atomic primitive is meant to provide.
*/
-#ifndef AARCH64_ATOMIC128_LDST_H
-#define AARCH64_ATOMIC128_LDST_H
+#ifndef X86_64_ATOMIC128_LDST_H
+#define X86_64_ATOMIC128_LDST_H
#ifdef CONFIG_INT128_TYPE
#include "host/cpuinfo.h"
@@ -65,4 +65,4 @@ static inline void atomic16_set(Int128 *ptr, Int128 val)
#include "host/include/generic/host/atomic128-ldst.h"
#endif
-#endif /* AARCH64_ATOMIC128_LDST_H */
+#endif /* X86_64_ATOMIC128_LDST_H */