diff --git a/MdeModulePkg/Core/Pei/PeiMain.h b/MdeModulePkg/Core/Pei/PeiMain.h
index 8e0cedd9b4..983c102ec0 100644
--- a/MdeModulePkg/Core/Pei/PeiMain.h
+++ b/MdeModulePkg/Core/Pei/PeiMain.h
@@ -165,16 +165,15 @@ typedef struct{
 
 /**
   Function Pointer type for PeiCore function.
-  @param SecCoreData     Points to a data structure containing information about the PEI core's operating
-                         environment, such as the size and location of temporary RAM, the stack location and
-                         the BFV location.
+  @param SecCoreData     Points to a data structure containing SEC to PEI handoff data, such as the size 
+  											 and location of temporary RAM, the stack location and the BFV location.
   @param PpiList         Points to a list of one or more PPI descriptors to be installed initially by the PEI core.
                          An empty PPI list consists of a single descriptor with the end-tag
                          EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST. As part of its initialization
                          phase, the PEI Foundation will add these SEC-hosted PPIs to its PPI database such
                          that both the PEI Foundation and any modules can leverage the associated service
                          calls and/or code in these early PPIs
-  @param Data            Pointer to old core data that is used to initialize the
+  @param OldCoreData     Pointer to old core data that is used to initialize the
                          core's data areas.
 **/
 typedef
@@ -214,9 +213,8 @@ typedef struct {
   with the old core data.
 
 
-  @param SecCoreData     Points to a data structure containing information about the PEI core's operating
-                         environment, such as the size and location of temporary RAM, the stack location and
-                         the BFV location.
+  @param SecCoreData     Points to a data structure containing SEC to PEI handoff data, such as the size 
+  											 and location of temporary RAM, the stack location and the BFV location.
   @param PpiList         Points to a list of one or more PPI descriptors to be installed initially by the PEI core.
                          An empty PPI list consists of a single descriptor with the end-tag
                          EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST. As part of its initialization
@@ -286,9 +284,8 @@ PeiDispatcher (
   @param PrivateData     PeiCore's private data structure
   @param OldCoreData     Old data from SecCore
                          NULL if being run in non-permament memory mode.
-  @param SecCoreData     Points to a data structure containing information about the PEI core's operating
-                         environment, such as the size and location of temporary RAM, the stack location and
-                         the BFV location.
+  @param SecCoreData     Points to a data structure containing SEC to PEI handoff data, such as the size 
+  											 and location of temporary RAM, the stack location and the BFV location.
 
 **/
 VOID
@@ -708,9 +705,8 @@ PeiFvFindNextVolume (
   Initialize the memory services.
 
   @param PrivateData     PeiCore's private data structure
-  @param SecCoreData     Points to a data structure containing information about the PEI core's operating
-                         environment, such as the size and location of temporary RAM, the stack location and
-                         the BFV location.
+  @param SecCoreData     Points to a data structure containing SEC to PEI handoff data, such as the size 
+  											 and location of temporary RAM, the stack location and the BFV location.
   @param OldCoreData     Pointer to the PEI Core data.
                          NULL if being run in non-permament memory mode.