diff --git a/MdeModulePkg/Library/DxeCapsuleLibFmp/DxeCapsuleProcessLib.c b/MdeModulePkg/Library/DxeCapsuleLibFmp/DxeCapsuleProcessLib.c
index 2cecc87385..f2cd0ad3e8 100644
--- a/MdeModulePkg/Library/DxeCapsuleLibFmp/DxeCapsuleProcessLib.c
+++ b/MdeModulePkg/Library/DxeCapsuleLibFmp/DxeCapsuleProcessLib.c
@@ -136,6 +136,7 @@ UINT32                      mCapsuleTotalNumber;
   Caution: This function may receive untrusted input.
 
   @param[in]  CapsuleHeader         Points to a capsule header.
+  @param[in]  CapFileName           Capsule file name.
   @param[out] ResetRequired         Indicates whether reset is required or not.
 
   @retval EFI_SUCESS            Process Capsule Image successfully.