diff --git a/drivers/pci/pci_auto.c b/drivers/pci/pci_auto.c
index 51d2ac0052dd527f16752675f659c41a9a46d25c..41d5447f122b129b65adc1b25484657663e601d4 100644
--- a/drivers/pci/pci_auto.c
+++ b/drivers/pci/pci_auto.c
@@ -148,8 +148,9 @@ void pciauto_setup_device(struct pci_controller *hose,
 				bar_res = mem;
 #endif
 
-			debug("PCI Autoconfig: BAR %d, Mem, size=0x%llx, ",
-			      bar_nr, (unsigned long long)bar_size);
+			debug("PCI Autoconfig: BAR %d, %s, size=0x%llx, ",
+			      bar_nr, bar_res == prefetch ? "Prf" : "Mem",
+			      (unsigned long long)bar_size);
 		}
 
 #ifndef CONFIG_PCI_ENUM_ONLY