diff --git a/MdePkg/Library/BasePcdLibNull/PcdLib.c b/MdePkg/Library/BasePcdLibNull/PcdLib.c
index 926d82ff3f..669af6484a 100644
--- a/MdePkg/Library/BasePcdLibNull/PcdLib.c
+++ b/MdePkg/Library/BasePcdLibNull/PcdLib.c
@@ -704,8 +704,6 @@ LibPcdSetExBool (
   @param[in]  NotificationFunction The function to call when the token 
               specified by Guid and TokenNumber is set.
 
-  @retval VOID
-
 **/
 VOID
 EFIAPI
@@ -728,8 +726,6 @@ LibPcdCallbackOnSet (
   @param[in]  TokenNumber Specify the token number.
   @param[in]  NotificationFunction The callback function to be unregistered.
 
-  @retval VOID
-
 **/
 VOID
 EFIAPI
diff --git a/MdePkg/Library/BasePciLibCf8/PciLib.c b/MdePkg/Library/BasePciLibCf8/PciLib.c
index d82bfe259b..af71b88e59 100644
--- a/MdePkg/Library/BasePciLibCf8/PciLib.c
+++ b/MdePkg/Library/BasePciLibCf8/PciLib.c
@@ -54,7 +54,7 @@ PciRead8 (
 
   @param  Address Address that encodes the PCI Bus, Device, Function and
                   Register.
-  @param  Data    The value to write.
+  @param  Value   The value to write.
 
   @return The value written to the PCI configuration register.
 
@@ -382,7 +382,7 @@ PciRead16 (
 
   @param  Address Address that encodes the PCI Bus, Device, Function and
                   Register.
-  @param  Data    The value to write.
+  @param  Value   The value to write.
 
   @return The value written to the PCI configuration register.
 
@@ -710,7 +710,7 @@ PciRead32 (
 
   @param  Address Address that encodes the PCI Bus, Device, Function and
                   Register.
-  @param  Data    The value to write.
+  @param  Value   The value to write.
 
   @return The value written to the PCI configuration register.
 
diff --git a/MdePkg/Library/BasePciLibPciExpress/PciLib.c b/MdePkg/Library/BasePciLibPciExpress/PciLib.c
index 33526a7d93..c1abd09f63 100644
--- a/MdePkg/Library/BasePciLibPciExpress/PciLib.c
+++ b/MdePkg/Library/BasePciLibPciExpress/PciLib.c
@@ -54,7 +54,7 @@ PciRead8 (
 
   @param  Address Address that encodes the PCI Bus, Device, Function and
                   Register.
-  @param  Data    The value to write.
+  @param  Value   The value to write.
 
   @return The value written to the PCI configuration register.
 
@@ -382,7 +382,7 @@ PciRead16 (
 
   @param  Address Address that encodes the PCI Bus, Device, Function and
                   Register.
-  @param  Data   The value to write.
+  @param  Value  The value to write.
 
   @return The value written to the PCI configuration register.
 
@@ -710,7 +710,7 @@ PciRead32 (
 
   @param  Address Address that encodes the PCI Bus, Device, Function and
                   Register.
-  @param  Data    The value to write.
+  @param  Value   The value to write.
 
   @return The value written to the PCI configuration register.