diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmr.c b/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmr.c
index ef08e2991f..0fe9645cb7 100644
--- a/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmr.c
+++ b/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmr.c
@@ -18,7 +18,7 @@
 #include <Library/IoLib.h>
 #include <Library/DebugLib.h>
 #include <IndustryStandard/Vtd.h>
-#include <Ppi/VTdInfo.h>
+#include <Ppi/VtdInfo.h>
 
 #include "IntelVTdPmrPei.h"
 
diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmrPei.c b/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmrPei.c
index d118b7ef26..6a19c88fbe 100644
--- a/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmrPei.c
+++ b/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmrPei.c
@@ -23,7 +23,7 @@
 #include <Library/HobLib.h>
 #include <IndustryStandard/Vtd.h>
 #include <Ppi/IoMmu.h>
-#include <Ppi/VTdInfo.h>
+#include <Ppi/VtdInfo.h>
 
 #include "IntelVTdPmrPei.h"
 
diff --git a/IntelSiliconPkg/Feature/VTd/PlatformVTdInfoSamplePei/PlatformVTdInfoSamplePei.c b/IntelSiliconPkg/Feature/VTd/PlatformVTdInfoSamplePei/PlatformVTdInfoSamplePei.c
index c79398fec3..324f3ef6ba 100644
--- a/IntelSiliconPkg/Feature/VTd/PlatformVTdInfoSamplePei/PlatformVTdInfoSamplePei.c
+++ b/IntelSiliconPkg/Feature/VTd/PlatformVTdInfoSamplePei/PlatformVTdInfoSamplePei.c
@@ -14,7 +14,7 @@
 
 #include <PiPei.h>
 
-#include <Ppi/VTdInfo.h>
+#include <Ppi/VtdInfo.h>
 
 #include <Library/PeiServicesLib.h>
 #include <Library/DebugLib.h>