diff --git a/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryM.nasm b/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryM.nasm
index 5dada2af54..61ab4612a3 100644
--- a/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryM.nasm
+++ b/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryM.nasm
@@ -40,12 +40,13 @@ struc FSPM_UPD_COMMON_FSP24
     .Revision:                  resb  1
     .Reserved:                  resb  3
     .Length                     resd  1
+    .NvsBufferPtr               resq  1
     .StackBase:                 resq  1
     .StackSize:                 resq  1
     .BootLoaderTolumSize:       resd  1
     .BootMode:                  resd  1
     .FspEventHandler            resq  1
-    .Reserved1:                 resb 24
+    .Reserved1:                 resb 16
     ; }
     .size:
 endstruc
diff --git a/IntelFsp2Pkg/FspSecCore/X64/FspApiEntryM.nasm b/IntelFsp2Pkg/FspSecCore/X64/FspApiEntryM.nasm
index dacf515845..2d2f75b1f0 100644
--- a/IntelFsp2Pkg/FspSecCore/X64/FspApiEntryM.nasm
+++ b/IntelFsp2Pkg/FspSecCore/X64/FspApiEntryM.nasm
@@ -22,12 +22,13 @@ struc FSPM_UPD_COMMON_FSP24
     .Revision:                  resb  1
     .Reserved:                  resb  3
     .Length                     resd  1
+    .NvsBufferPtr               resq  1
     .StackBase:                 resq  1
     .StackSize:                 resq  1
     .BootLoaderTolumSize:       resd  1
     .BootMode:                  resd  1
     .FspEventHandler            resq  1
-    .Reserved1:                 resb 24
+    .Reserved1:                 resb 16
     ; }
     .size:
 endstruc