diff --git a/SecurityPkg/Include/Library/Tpm2CommandLib.h b/SecurityPkg/Include/Library/Tpm2CommandLib.h
index 699270f127..f7a04f2092 100644
--- a/SecurityPkg/Include/Library/Tpm2CommandLib.h
+++ b/SecurityPkg/Include/Library/Tpm2CommandLib.h
@@ -1038,7 +1038,7 @@ IsHashAlgSupportedInHashAlgorithmMask(
 /**
   Copy TPML_DIGEST_VALUES into a buffer
 
-  @param[in,out] Buffer             Buffer to hold TPML_DIGEST_VALUES.
+  @param[in,out] Buffer             Buffer to hold copied TPML_DIGEST_VALUES compact binary.
   @param[in]     DigestList         TPML_DIGEST_VALUES to be copied.
   @param[in]     HashAlgorithmMask  HASH bits corresponding to the desired digests to copy.
 
diff --git a/SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c
index 9aa77af97a..64d3c531ff 100644
--- a/SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c
+++ b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c
@@ -239,7 +239,7 @@ IsHashAlgSupportedInHashAlgorithmMask(
 /**
   Copy TPML_DIGEST_VALUES into a buffer
 
-  @param[in,out] Buffer             Buffer to hold TPML_DIGEST_VALUES.
+  @param[in,out] Buffer             Buffer to hold copied TPML_DIGEST_VALUES compact binary.
   @param[in]     DigestList         TPML_DIGEST_VALUES to be copied.
   @param[in]     HashAlgorithmMask  HASH bits corresponding to the desired digests to copy.