diff --git a/SecurityPkg/Include/Library/Tcg2PhysicalPresenceLib.h b/SecurityPkg/Include/Library/Tcg2PhysicalPresenceLib.h
index 696c7e88a7..910da7a288 100644
--- a/SecurityPkg/Include/Library/Tcg2PhysicalPresenceLib.h
+++ b/SecurityPkg/Include/Library/Tcg2PhysicalPresenceLib.h
@@ -125,8 +125,8 @@ Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (
 
   Caution: This function may receive untrusted input.
 
-  @param[in out]  Pointer to OperationRequest TPM physical presence operation request.
-  @param[in out]  Pointer to RequestParameter TPM physical presence operation request parameter.
+  @param[in, out]  Pointer to OperationRequest TPM physical presence operation request.
+  @param[in, out]  Pointer to RequestParameter TPM physical presence operation request parameter.
 
   @return Return Code for Submit TPM Operation Request to Pre-OS Environment and
         Submit TPM Operation Request to Pre-OS Environment 2.
diff --git a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c
index c03b42b64f..039bca1293 100644
--- a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c
+++ b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c
@@ -91,8 +91,8 @@ Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (
 
   Caution: This function may receive untrusted input.
 
-  @param[in out]  Pointer to OperationRequest TPM physical presence operation request.
-  @param[in out]  Pointer to RequestParameter TPM physical presence operation request parameter.
+  @param[in, out]  Pointer to OperationRequest TPM physical presence operation request.
+  @param[in, out]  Pointer to RequestParameter TPM physical presence operation request parameter.
 
   @return Return Code for Submit TPM Operation Request to Pre-OS Environment and
         Submit TPM Operation Request to Pre-OS Environment 2.