diff --git a/OvmfPkg/Include/Fdf/OvmfPkgDefines.fdf.inc b/OvmfPkg/Include/Fdf/OvmfPkgDefines.fdf.inc
index 6170c5993c..a933961464 100644
--- a/OvmfPkg/Include/Fdf/OvmfPkgDefines.fdf.inc
+++ b/OvmfPkg/Include/Fdf/OvmfPkgDefines.fdf.inc
@@ -62,9 +62,9 @@ DEFINE FW_BLOCKS         = 0x400
 DEFINE CODE_BASE_ADDRESS = 0xFFC84000
 DEFINE CODE_SIZE         = 0x0037C000
 DEFINE CODE_BLOCKS       = 0x37C
-DEFINE FVMAIN_SIZE       = 0x00348000
-DEFINE SECFV_OFFSET      = 0x003CC000
-DEFINE SECFV_SIZE        = 0x34000
+DEFINE FVMAIN_SIZE       = 0x00345000
+DEFINE SECFV_OFFSET      = 0x003C9000
+DEFINE SECFV_SIZE        = 0x37000
 !endif
 
 SET gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFdBaseAddress     = $(FW_BASE_ADDRESS)