diff --git a/drivers/pci/pci_auto.c b/drivers/pci/pci_auto.c
index 88bc416..ee9a854 100644
--- a/drivers/pci/pci_auto.c
+++ b/drivers/pci/pci_auto.c
@@ -30,7 +30,7 @@
 	u8 header_type;
 	int rom_addr;
 	pci_addr_t bar_value;
-	struct pci_region *bar_res;
+	struct pci_region *bar_res = NULL;
 	int found_mem64 = 0;
 	u16 class;