diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumerator.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumerator.c
index 6c1de3f3e6..bd256cfc85 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumerator.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumerator.c
@@ -126,6 +126,7 @@ PciEnumerator (
 
   gFullEnumeration = FALSE;
 
+  Handle = NULL;
   Status = gBS->InstallProtocolInterface (
                   &Handle,
                   &gEfiPciEnumerationCompleteProtocolGuid,