diff --git a/MdePkg/Library/BaseLib/Ipf/FlushCacheRange.s b/MdePkg/Library/BaseLib/Ipf/FlushCacheRange.s
index 6e467f0d13..72623f5a27 100644
--- a/MdePkg/Library/BaseLib/Ipf/FlushCacheRange.s
+++ b/MdePkg/Library/BaseLib/Ipf/FlushCacheRange.s
@@ -19,8 +19,7 @@
 //--
 .file  "IpfCpuCache.s"
 
-#include  "IpfMacro.i"
-//#include  "IpfDefines.h"
+#include <IpfMacro.i>
 
 //
 //  Invalidates a range of instruction cache lines in the cache coherency domain