diff --git a/MdePkg/Include/Library/HobLib.h b/MdePkg/Include/Library/HobLib.h
index dcb4080d48..d17de0b35e 100644
--- a/MdePkg/Include/Library/HobLib.h
+++ b/MdePkg/Include/Library/HobLib.h
@@ -415,25 +415,6 @@ BuildMemoryAllocationHob (
   IN EFI_MEMORY_TYPE             MemoryType
   );
 
-/**
-  Builds an UEFI Capsule HOB.
-
-  This function builds an UEFI Capsule HOB.
-  It can only be invoked during PEI phase;
-  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
-  If there is no additional space for HOB creation, then ASSERT().
-
-  @param  BaseAddress   The physical memory-mapped base address of an UEFI capsule.
-  @param  Length        The length of the contiguous memory in bytes.
-
-**/
-VOID
-EFIAPI
-BuildCapsuleHob (
-  IN EFI_PHYSICAL_ADDRESS        BaseAddress,
-  IN UINT64                      Length
-  );
-
 /**
   Returns the type of a HOB.
 
diff --git a/MdePkg/Library/DxeHobLib/HobLib.c b/MdePkg/Library/DxeHobLib/HobLib.c
index 9de92ef3be..61a8fba9a2 100644
--- a/MdePkg/Library/DxeHobLib/HobLib.c
+++ b/MdePkg/Library/DxeHobLib/HobLib.c
@@ -562,28 +562,3 @@ BuildMemoryAllocationHob (
   //
   ASSERT (FALSE);
 }
-
-/**
-  Builds an UEFI Capsule HOB.
-
-  This function builds an UEFI Capsule HOB.
-  It can only be invoked during PEI phase;
-  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
-  If there is no additional space for HOB creation, then ASSERT().
-
-  @param  BaseAddress   The physical memory-mapped base address of an UEFI capsule.
-  @param  Length        The length of the contiguous memory in bytes.
-
-**/
-VOID
-EFIAPI
-BuildCapsuleHob (
-  IN EFI_PHYSICAL_ADDRESS        BaseAddress,
-  IN UINT64                      Length
-  )
-{
-  //
-  // PEI HOB is read only for DXE phase
-  //
-  ASSERT (FALSE);
-}
diff --git a/MdePkg/Library/PeiHobLib/HobLib.c b/MdePkg/Library/PeiHobLib/HobLib.c
index f0cc665085..1815ddf530 100644
--- a/MdePkg/Library/PeiHobLib/HobLib.c
+++ b/MdePkg/Library/PeiHobLib/HobLib.c
@@ -489,7 +489,12 @@ BuildCvHob (
   IN UINT64                      Length
   )
 {
-  ASSERT (FALSE);
+  EFI_HOB_UEFI_CAPSULE  *Hob;
+
+  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_UEFI_CAPSULE, sizeof (EFI_HOB_UEFI_CAPSULE));
+
+  Hob->BaseAddress  = BaseAddress;
+  Hob->Length       = Length;
 }
 
 /**
@@ -641,30 +646,3 @@ BuildMemoryAllocationHob (
   //
   ZeroMem (Hob->AllocDescriptor.Reserved, sizeof (Hob->AllocDescriptor.Reserved));
 }
-
-/**
-  Builds an UEFI Capsule HOB.
-
-  This function builds an UEFI Capsule HOB.
-  It can only be invoked during PEI phase;
-  for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
-  If there is no additional space for HOB creation, then ASSERT().
-
-  @param  BaseAddress   The physical memory-mapped base address of an UEFI capsule.
-  @param  Length        The length of the contiguous memory in bytes.
-
-**/
-VOID
-EFIAPI
-BuildCapsuleHob (
-  IN EFI_PHYSICAL_ADDRESS        BaseAddress,
-  IN UINT64                      Length
-  )
-{
-  EFI_HOB_UEFI_CAPSULE  *Hob;
-
-  Hob = InternalPeiCreateHob (EFI_HOB_TYPE_UEFI_CAPSULE, sizeof (EFI_HOB_UEFI_CAPSULE));
-
-  Hob->BaseAddress  = BaseAddress;
-  Hob->Length       = Length;
-}