diff --git a/MdePkg/Library/BaseMemoryLibOptDxe/MemLibGuid.c b/MdePkg/Library/BaseMemoryLibOptDxe/MemLibGuid.c
index 27e8e0a321..b2aefa9855 100644
--- a/MdePkg/Library/BaseMemoryLibOptDxe/MemLibGuid.c
+++ b/MdePkg/Library/BaseMemoryLibOptDxe/MemLibGuid.c
@@ -24,7 +24,7 @@
 **/
 
 
-#include <MemLibInternals.h>
+#include "MemLibInternals.h"
 
 
 /**