diff --git a/UefiCpuPkg/Include/Register/Msr/BroadwellMsr.h b/UefiCpuPkg/Include/Register/Msr/BroadwellMsr.h
index 69c404eccd..067368560b 100644
--- a/UefiCpuPkg/Include/Register/Msr/BroadwellMsr.h
+++ b/UefiCpuPkg/Include/Register/Msr/BroadwellMsr.h
@@ -43,6 +43,7 @@
   Msr.Uint64 = AsmReadMsr64 (MSR_BROADWELL_IA32_PERF_GLOBAL_STAUS);
   AsmWriteMsr64 (MSR_BROADWELL_IA32_PERF_GLOBAL_STAUS, Msr.Uint64);
   @endcode
+  @note MSR_BROADWELL_IA32_PERF_GLOBAL_STAUS is defined as IA32_PERF_GLOBAL_STAUS in SDM.
 **/
 #define MSR_BROADWELL_IA32_PERF_GLOBAL_STAUS     0x0000038E
 
@@ -128,6 +129,7 @@ typedef union {
   Msr.Uint64 = AsmReadMsr64 (MSR_BROADWELL_PKG_CST_CONFIG_CONTROL);
   AsmWriteMsr64 (MSR_BROADWELL_PKG_CST_CONFIG_CONTROL, Msr.Uint64);
   @endcode
+  @note MSR_BROADWELL_PKG_CST_CONFIG_CONTROL is defined as MSR_PKG_CST_CONFIG_CONTROL in SDM.
 **/
 #define MSR_BROADWELL_PKG_CST_CONFIG_CONTROL     0x000000E2
 
@@ -213,6 +215,7 @@ typedef union {
 
   Msr.Uint64 = AsmReadMsr64 (MSR_BROADWELL_TURBO_RATIO_LIMIT);
   @endcode
+  @note MSR_BROADWELL_TURBO_RATIO_LIMIT is defined as MSR_TURBO_RATIO_LIMIT in SDM.
 **/
 #define MSR_BROADWELL_TURBO_RATIO_LIMIT          0x000001AD