diff --git a/MdeModulePkg/Universal/Disk/CdExpressPei/PeiCdExpress.c b/MdeModulePkg/Universal/Disk/CdExpressPei/PeiCdExpress.c
index 2f8d1abed0..f78118a6a8 100644
--- a/MdeModulePkg/Universal/Disk/CdExpressPei/PeiCdExpress.c
+++ b/MdeModulePkg/Universal/Disk/CdExpressPei/PeiCdExpress.c
@@ -162,6 +162,8 @@ UpdateBlocksAndVolumes (
   EFI_PEI_SERVICES                **PeiServices;
 
   IndexBlockDevice = 0;
+  BlockIo2Ppi      = NULL;
+  BlockIoPpi       = NULL;
   //
   // Find out all Block Io Ppi instances within the system
   // Assuming all device Block Io Peims are dispatched already