diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.h b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.h
index ecf186667a..f3aabdb7e0 100644
--- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.h
+++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.h
@@ -241,12 +241,12 @@ Decompress (
   );
 
 /**
-   Clear legacy memory located at the first 4K-page.
+  Clear legacy memory located at the first 4K-page.
 
-   This function traverses the whole HOB list to check if memory from 0 to 4095
-   exists and has not been allocated, and then clear it if so.
+  This function traverses the whole HOB list to check if memory from 0 to 4095
+  exists and has not been allocated, and then clear it if so.
 
-   @param HoStart         The start of HobList passed to DxeCore.
+  @param HobStart         The start of HobList passed to DxeCore.
 
 **/
 VOID
@@ -255,10 +255,10 @@ ClearFirst4KPage (
   );
 
 /**
-   Return configure status of NULL pointer detection feature
+  Return configure status of NULL pointer detection feature.
 
-   @return TRUE   NULL pointer detection feature is enabled
-   @return FALSE  NULL pointer detection feature is disabled
+  @return TRUE   NULL pointer detection feature is enabled
+  @return FALSE  NULL pointer detection feature is disabled
 **/
 BOOLEAN
 IsNullDetectionEnabled (
diff --git a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
index a10dea25fd..29b6205e88 100644
--- a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
+++ b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
@@ -32,12 +32,12 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include "VirtualMemory.h"
 
 /**
-   Clear legacy memory located at the first 4K-page, if available.
+  Clear legacy memory located at the first 4K-page, if available.
 
-   This function traverses the whole HOB list to check if memory from 0 to 4095
-   exists and has not been allocated, and then clear it if so.
+  This function traverses the whole HOB list to check if memory from 0 to 4095
+  exists and has not been allocated, and then clear it if so.
 
-   @param HoStart                   The start of HobList passed to DxeCore.
+  @param HobStart                  The start of HobList passed to DxeCore.
 
 **/
 VOID
@@ -86,6 +86,13 @@ ClearFirst4KPage (
   return;
 }
 
+/**
+  Return configure status of NULL pointer detection feature.
+
+  @return TRUE   NULL pointer detection feature is enabled
+  @return FALSE  NULL pointer detection feature is disabled
+
+**/
 BOOLEAN
 IsNullDetectionEnabled (
   VOID