diff --git a/src/southbridge/amd/cimx/sb800/SBPLATFORM.h b/src/southbridge/amd/cimx/sb800/SBPLATFORM.h
index 164a65156f..d7317a23a2 100644
--- a/src/southbridge/amd/cimx/sb800/SBPLATFORM.h
+++ b/src/southbridge/amd/cimx/sb800/SBPLATFORM.h
@@ -155,4 +155,7 @@ typedef union _PCI_ADDR {
 #define cimEhciTrafficHandingDefault    FALSE
 #define cimFusionMsgCMultiCoreDefault   FALSE
 #define cimFusionMsgCStageDefault       FALSE
+
+#include "vendorcode/amd/cimx/sb800/AMDSBLIB.h"
+
 #endif // _AMD_SBPLATFORM_H_
diff --git a/src/vendorcode/amd/cimx/sb800/AMDSBLIB.h b/src/vendorcode/amd/cimx/sb800/AMDSBLIB.h
index 6c92227eda..b2a0a1b75a 100644
--- a/src/vendorcode/amd/cimx/sb800/AMDSBLIB.h
+++ b/src/vendorcode/amd/cimx/sb800/AMDSBLIB.h
@@ -43,6 +43,8 @@
  *
  */
 
+#ifndef __VENDORCODE_AMD_CIMX_SB800_AMDSBLIB_H__
+#define __VENDORCODE_AMD_CIMX_SB800_AMDSBLIB_H__
 
 //AMDSBLIB Routines
 
@@ -116,3 +118,5 @@ void WriteIo32(IN unsigned short Address, IN unsigned int Data);
 //void CpuidRead(IN unsigned int CpuidFcnAddress, OUT CPUID_DATA *Value);
 void CpuidRead(unsigned int CpuidFcnAddress, CPUID_DATA *Value);
 unsigned char ReadNumberOfCpuCores(void);
+
+#endif