diff --git a/src/southbridge/intel/bd82x6x/nvs.h b/src/southbridge/intel/bd82x6x/nvs.h
index ae3304ee8e..b75e0ab025 100644
--- a/src/southbridge/intel/bd82x6x/nvs.h
+++ b/src/southbridge/intel/bd82x6x/nvs.h
@@ -1,5 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#ifndef SOUTHBRIDGE_INTEL_BD82X6X_NVS_H
+#define SOUTHBRIDGE_INTEL_BD82X6X_NVS_H
+
 #include <commonlib/helpers.h>
 #include <stdint.h>
 #include "vendorcode/google/chromeos/gnvs.h"
@@ -105,3 +108,5 @@ struct __packed global_nvs {
 };
 
 check_member(global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
+
+#endif /* SOUTHBRIDGE_INTEL_BD82X6X_NVS_H */
diff --git a/src/southbridge/intel/i82801dx/nvs.h b/src/southbridge/intel/i82801dx/nvs.h
index 3cd0afb1a9..1f8f6d1ad1 100644
--- a/src/southbridge/intel/i82801dx/nvs.h
+++ b/src/southbridge/intel/i82801dx/nvs.h
@@ -1,5 +1,10 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#ifndef SOUTHBRIDGE_INTEL_I82801DX_NVS_H
+#define SOUTHBRIDGE_INTEL_I82801DX_NVS_H
+
+#include <stdint.h>
+
 struct __packed global_nvs {
 	/* Miscellaneous */
 	u16	osys; /* 0x00 - Operating System */
@@ -96,3 +101,5 @@ struct __packed global_nvs {
 	u8	bten;
 	u8	rsvd13[14];
 };
+
+#endif /* SOUTHBRIDGE_INTEL_I82801DX_NVS_H */
diff --git a/src/southbridge/intel/ibexpeak/nvs.h b/src/southbridge/intel/ibexpeak/nvs.h
index 834b3af8a8..8823d83773 100644
--- a/src/southbridge/intel/ibexpeak/nvs.h
+++ b/src/southbridge/intel/ibexpeak/nvs.h
@@ -1,6 +1,10 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#ifndef SOUTHBRIDGE_INTEL_IBEXPEAK_NVS_H
+#define SOUTHBRIDGE_INTEL_IBEXPEAK_NVS_H
+
 #include <commonlib/helpers.h>
+#include <stdint.h>
 #include "vendorcode/google/chromeos/gnvs.h"
 
 struct __packed global_nvs {
@@ -102,3 +106,5 @@ struct __packed global_nvs {
 };
 
 check_member(global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
+
+#endif /* SOUTHBRIDGE_INTEL_IBEXPEAK_NVS_H */
diff --git a/src/southbridge/intel/lynxpoint/nvs.h b/src/southbridge/intel/lynxpoint/nvs.h
index 4abe026354..154e285a4a 100644
--- a/src/southbridge/intel/lynxpoint/nvs.h
+++ b/src/southbridge/intel/lynxpoint/nvs.h
@@ -1,5 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#ifndef SOUTHBRIDGE_INTEL_LYNXPOINT_NVS_H
+#define SOUTHBRIDGE_INTEL_LYNXPOINT_NVS_H
+
 #include <commonlib/helpers.h>
 #include <stdint.h>
 #include "vendorcode/google/chromeos/gnvs.h"
@@ -79,3 +82,5 @@ struct __packed global_nvs {
 };
 
 check_member(global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
+
+#endif /* SOUTHBRIDGE_INTEL_LYNXPOINT_NVS_H */