diff --git a/MdeModulePkg/Core/Dxe/Imem.h b/MdeModulePkg/Core/Dxe/Imem.h
index ff96d1539e..23e6d097fd 100644
--- a/MdeModulePkg/Core/Dxe/Imem.h
+++ b/MdeModulePkg/Core/Dxe/Imem.h
@@ -151,6 +151,5 @@ CoreReleaseMemoryLock (
 
 extern EFI_LOCK           gMemoryLock;
 extern LIST_ENTRY         gMemoryMap;
-extern MEMORY_MAP         *gMemoryLastConvert;
 extern LIST_ENTRY         mGcdMemorySpaceMap;
 #endif
diff --git a/MdeModulePkg/Core/Dxe/Mem/MemData.c b/MdeModulePkg/Core/Dxe/Mem/MemData.c
index f7c6fbd55b..cf45452c94 100644
--- a/MdeModulePkg/Core/Dxe/Mem/MemData.c
+++ b/MdeModulePkg/Core/Dxe/Mem/MemData.c
@@ -24,8 +24,3 @@ EFI_LOCK          gMemoryLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_NOTIFY);
 // MemoryMap - the current memory map
 //
 LIST_ENTRY        gMemoryMap  = INITIALIZE_LIST_HEAD_VARIABLE (gMemoryMap);
-
-//
-// MemoryLastConvert - the last memory descriptor used for a conversion request
-//
-MEMORY_MAP        *gMemoryLastConvert;