diff --git a/OvmfPkg/PlatformPei/MemTypeInfo.c b/OvmfPkg/PlatformPei/MemTypeInfo.c
index c8fcf17326..eb37febb31 100644
--- a/OvmfPkg/PlatformPei/MemTypeInfo.c
+++ b/OvmfPkg/PlatformPei/MemTypeInfo.c
@@ -203,12 +203,12 @@ STATIC CONST EFI_PEI_NOTIFY_DESCRIPTOR  mReadOnlyVariable2Notify = {
 
 VOID
 MemTypeInfoInitialization (
-  VOID
+  IN OUT EFI_HOB_PLATFORM_INFO  *PlatformInfoHob
   )
 {
   EFI_STATUS  Status;
 
-  if (!mPlatformInfoHob.SmmSmramRequire) {
+  if (!PlatformInfoHob->SmmSmramRequire) {
     //
     // EFI_PEI_READ_ONLY_VARIABLE2_PPI will never be available; install
     // the default memory type information HOB right away.
diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index 4cd77fd5f8..85b47e7ed8 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -373,7 +373,7 @@ InitializePlatform (
     }
 
     PeiFvInitialization (&mPlatformInfoHob);
-    MemTypeInfoInitialization ();
+    MemTypeInfoInitialization (&mPlatformInfoHob);
     MemMapInitialization (&mPlatformInfoHob);
     NoexecDxeInitialization ();
   }
diff --git a/OvmfPkg/PlatformPei/Platform.h b/OvmfPkg/PlatformPei/Platform.h
index d0c673c5a3..0c0558f062 100644
--- a/OvmfPkg/PlatformPei/Platform.h
+++ b/OvmfPkg/PlatformPei/Platform.h
@@ -67,7 +67,7 @@ PeiFvInitialization (
 
 VOID
 MemTypeInfoInitialization (
-  VOID
+  IN OUT EFI_HOB_PLATFORM_INFO  *PlatformInfoHob
   );
 
 VOID