diff --git a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
index d2a751a8ed..95d5c8c0a9 100644
--- a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
+++ b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
@@ -229,7 +229,7 @@ ScsiDiskDriverBindingStart (
     );
 
   //
-  // Retrive device information
+  // Retrieve device information
   //
   MaxRetry = 2;
   for (Index = 0; Index < MaxRetry; Index++) {
diff --git a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
index 975a064a39..f5544d9fce 100644
--- a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
+++ b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
@@ -97,7 +97,7 @@ InternalHiiLibPreparePackages (
   MarkerBackup = Marker;
 
   //
-  // Count the lenth of the final package list.
+  // Count the length of the final package list.
   //
   for (Index = 0; Index < NumberOfPackages; Index++) {
     CopyMem (&PackageLength, VA_ARG (Marker, VOID *), sizeof (UINT32));
@@ -108,7 +108,7 @@ InternalHiiLibPreparePackages (
   }
 
   //
-  // Include the lenght of EFI_HII_PACKAGE_END
+  // Include the length of EFI_HII_PACKAGE_END
   //
   PackageListLength += sizeof (EFI_HII_PACKAGE_HEADER);
   PackageListHeader = AllocateZeroPool (PackageListLength);
@@ -186,7 +186,7 @@ HiiLibPreparePackageList (
   GuidId,  and the variable length argument list of package pointers.
 
   Then, EFI_HII_PACKAGE_LIST will be register to the default System HII Database. The
-  Handle to the newly registered Package List is returned throught HiiHandle.
+  Handle to the newly registered Package List is returned through HiiHandle.
 
   If HiiHandle is NULL, then ASSERT.
 
diff --git a/MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatform.c b/MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatform.c
index f2f7d4caec..3ba28c8ae7 100644
--- a/MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatform.c
+++ b/MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatform.c
@@ -1,5 +1,5 @@
 /** @file
-  Console Platfrom DXE Driver, install Console Device Guids and update Console
+  Console Platform DXE Driver, install Console Device Guids and update Console
   Environment Variables.
 
 Copyright (c) 2006 - 2008, Intel Corporation. <BR>