diff --git a/IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PciCfgInternal.h b/IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PciCfgInternal.h
index fed8f7277c..7326a1b81d 100644
--- a/IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PciCfgInternal.h
+++ b/IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PciCfgInternal.h
@@ -26,7 +26,7 @@
 #include <Library/PciLib.h>
 #include <Library/PeimEntryPoint.h>
 
-#include <IndustryStandard\Pci.h>
+#include <IndustryStandard/Pci.h>
 
 
 /**