diff --git a/OvmfPkg/PlatformPei/MemDetect.c b/OvmfPkg/PlatformPei/MemDetect.c
index 5507d9585b..45f7eba65d 100644
--- a/OvmfPkg/PlatformPei/MemDetect.c
+++ b/OvmfPkg/PlatformPei/MemDetect.c
@@ -125,7 +125,8 @@ Q35SmramAtDefaultSmbaseInitialization (
 }
 
 VOID
-QemuUc32BaseInitialization (
+EFIAPI
+PlatformQemuUc32BaseInitialization (
   IN OUT EFI_HOB_PLATFORM_INFO  *PlatformInfoHob
   )
 {
diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index 20e38a098d..1275c9187e 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -780,7 +780,7 @@ InitializePlatform (
 
   PublishPeiMemory ();
 
-  QemuUc32BaseInitialization (&mPlatformInfoHob);
+  PlatformQemuUc32BaseInitialization (&mPlatformInfoHob);
 
   InitializeRamRegions (&mPlatformInfoHob);
 
diff --git a/OvmfPkg/PlatformPei/Platform.h b/OvmfPkg/PlatformPei/Platform.h
index ff4459d79f..038a806a1e 100644
--- a/OvmfPkg/PlatformPei/Platform.h
+++ b/OvmfPkg/PlatformPei/Platform.h
@@ -40,7 +40,8 @@ GetSystemMemorySizeBelow4gb (
   );
 
 VOID
-QemuUc32BaseInitialization (
+EFIAPI
+PlatformQemuUc32BaseInitialization (
   IN OUT EFI_HOB_PLATFORM_INFO  *PlatformInfoHob
   );