diff --git a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
index 51ff210d18..40d0230b4d 100644
--- a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
+++ b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
@@ -1125,6 +1125,7 @@ GetVarStoreType (
   GuidStr          = NULL;
   NameStr          = NULL;
   TempStr          = NULL;
+  *IsEfiVarstore   = FALSE;
 
   Status = GetFormPackageData(DataBaseRecord, &HiiFormPackage, &PackageSize);
   if (EFI_ERROR (Status)) {