diff --git a/MdePkg/Library/BasePcdLibNull/PcdLib.c b/MdePkg/Library/BasePcdLibNull/PcdLib.c
index ec7101e600..ef285ea80f 100644
--- a/MdePkg/Library/BasePcdLibNull/PcdLib.c
+++ b/MdePkg/Library/BasePcdLibNull/PcdLib.c
@@ -38,12 +38,10 @@ LibPcdSetSku (
   return 0;
 }
 
-
-
 /**
   Returns the 8-bit value for the token specified by TokenNumber. 
 
-  @param[in]  The PCD token number to retrieve a current value for.
+  @param[in]  TokenNumber The PCD token number to retrieve a current value for.
 
   @retval UINT8 Returns the 8-bit value for the token specified by TokenNumber. 
 
@@ -64,7 +62,7 @@ LibPcdGet8 (
 /**
   Returns the 16-bit value for the token specified by TokenNumber. 
 
-  @param[in]  The PCD token number to retrieve a current value for.
+  @param[in] TokenNumber The PCD token number to retrieve a current value for.
 
   @retval UINT16 Returns the 16-bit value for the token specified by TokenNumber. 
 
@@ -472,9 +470,9 @@ LibPcdSet64 (
   
   If SizeOfValue > 0 and Buffer is NULL, then ASSERT().
   
-  @param[in]  TokenNumber The PCD token number to set a current value for.
-  @param[in,out] SizeOfBuffer The size, in bytes, of Buffer.
-  @param[in]  Value A pointer to the buffer to set.
+  @param[in]        TokenNumber     The PCD token number to set a current value for.
+  @param[in, out]   SizeOfBuffer    The size, in bytes, of Buffer.
+  @param[in]        Buffer          A pointer to the buffer to set.
 
   @retval VOID* Return the pointer for the buffer been set.
 
@@ -753,10 +751,10 @@ LibPcdCancelCallback (
   token number in the token space, then 0 is returned.  If TokenNumber is not 0 and 
   is not in the token space specified by Guid, then ASSERT().
 
-  @param[in]  Pointer to a 128-bit unique value that designates which namespace 
-              to set a value from.  If NULL, then the default token space is used.
-  @param[in]  The previous PCD token number.  If 0, then retrieves the first PCD 
-              token number.
+  @param[in]  Guid          Pointer to a 128-bit unique value that designates which namespace 
+                            to set a value from.  If NULL, then the default token space is used.
+  @param[in]  TokenNumber   The previous PCD token number.  If 0, then retrieves the first PCD 
+                            token number.
 
   @retval UINTN            The next valid token number.
 
@@ -786,8 +784,8 @@ LibPcdGetNextToken (
 
 
   
-  @param[in]  Pointer to a 128-bit unique value that designates from which namespace 
-              to start the search.
+  @param[in]  Guid  Pointer to a 128-bit unique value that designates from which namespace 
+                    to start the search.
 
   @retval CONST GUID *  The next valid token namespace.