diff --git a/MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c b/MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c
index d251265ffb..5b0fe44a23 100644
--- a/MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c
+++ b/MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c
@@ -135,18 +135,18 @@ IsMemoryProtectionSectionAligned (
   switch (MemoryType) {
     case EfiRuntimeServicesCode:
     case EfiACPIMemoryNVS:
+    case EfiReservedMemoryType:
       PageAlignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;
       break;
     case EfiRuntimeServicesData:
-    case EfiACPIReclaimMemory:
       ASSERT (FALSE);
       PageAlignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;
       break;
     case EfiBootServicesCode:
     case EfiLoaderCode:
-    case EfiReservedMemoryType:
       PageAlignment = EFI_PAGE_SIZE;
       break;
+    case EfiACPIReclaimMemory:
     default:
       ASSERT (FALSE);
       PageAlignment = EFI_PAGE_SIZE;