diff --git a/OvmfPkg/Library/PeilessStartupLib/Hob.c b/OvmfPkg/Library/PeilessStartupLib/Hob.c
index 3c544ca1f6..5fc84a8090 100644
--- a/OvmfPkg/Library/PeilessStartupLib/Hob.c
+++ b/OvmfPkg/Library/PeilessStartupLib/Hob.c
@@ -22,6 +22,8 @@
 #include <OvmfPlatforms.h>
 #include "PeilessStartupInternal.h"
 
+#define EFI_RESOURCE_MEMORY_UNACCEPTED  7
+
 /**
  * Construct the HobList in SEC phase.
  *
@@ -90,7 +92,7 @@ ConstructFwHobList (
   //
   while (!END_OF_HOB_LIST (Hob)) {
     if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
-      if (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) {
+      if (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_UNACCEPTED) {
         PhysicalEnd    = Hob.ResourceDescriptor->PhysicalStart + Hob.ResourceDescriptor->ResourceLength;
         ResourceLength = Hob.ResourceDescriptor->ResourceLength;