diff --git a/Vlv2TbltDevicePkg/FvbRuntimeDxe/FvbService.c b/Vlv2TbltDevicePkg/FvbRuntimeDxe/FvbService.c
index b0013f9183..89b9410424 100644
--- a/Vlv2TbltDevicePkg/FvbRuntimeDxe/FvbService.c
+++ b/Vlv2TbltDevicePkg/FvbRuntimeDxe/FvbService.c
@@ -793,7 +793,7 @@ FvbProtocolEraseBlocks (
       break;
     }
 
-    NumOfLba = VA_ARG (args, UINT32);
+    NumOfLba = VA_ARG (args, UINTN);
 
     //
     // Check input parameters.
@@ -817,7 +817,7 @@ FvbProtocolEraseBlocks (
       break;
     }
 
-    NumOfLba = VA_ARG (args, UINT32);
+    NumOfLba = VA_ARG (args, UINTN);
 
     while ( NumOfLba > 0 ) {
       Status = FvbEraseBlock (FvbDevice->Instance, StartingLba);
diff --git a/Vlv2TbltDevicePkg/FvbRuntimeDxe/FvbSmmDxe.c b/Vlv2TbltDevicePkg/FvbRuntimeDxe/FvbSmmDxe.c
index 20aaf8720f..22a4bdcdd4 100644
--- a/Vlv2TbltDevicePkg/FvbRuntimeDxe/FvbSmmDxe.c
+++ b/Vlv2TbltDevicePkg/FvbRuntimeDxe/FvbSmmDxe.c
@@ -725,7 +725,7 @@ FvbEraseBlocks (
       break;
     }
 
-    NumOfLba = VA_ARG (Marker, UINT32);
+    NumOfLba = VA_ARG (Marker, UINTN);
     if (NumOfLba == 0) {
       return EFI_INVALID_PARAMETER;
     }
@@ -742,7 +742,7 @@ FvbEraseBlocks (
     if (StartingLba == EFI_LBA_LIST_TERMINATOR ) {
       break;
     }
-    NumOfLba = VA_ARG (Marker, UINT32);
+    NumOfLba = VA_ARG (Marker, UINTN);
     Status = EraseBlock (This, StartingLba, NumOfLba);
     if (EFI_ERROR (Status)) {
       break;