diff --git a/src/northbridge/intel/haswell/pcie.c b/src/northbridge/intel/haswell/pcie.c
index ac6d4ca..d936399 100644
--- a/src/northbridge/intel/haswell/pcie.c
+++ b/src/northbridge/intel/haswell/pcie.c
@@ -50,7 +50,7 @@
 {
 	const struct northbridge_intel_haswell_config *config = config_of(dev);
 
-	const uint8_t func = PCI_FUNC(PCI_BDF(dev));
+	const uint8_t func = PCI_FUNC(dev->path.pci.devfn);
 
 	assert(func < ARRAY_SIZE(config->peg_cfg));