diff --git a/sys/dev/acpica/acpi_pci_link.c b/sys/dev/acpica/acpi_pci_link.c
index 0b33772d6c6..dfbaeaddec0 100644
--- a/sys/dev/acpica/acpi_pci_link.c
+++ b/sys/dev/acpica/acpi_pci_link.c
@@ -719,7 +719,7 @@ acpi_pci_link_srs_from_crs(struct acpi_pci_link_softc *sc, ACPI_BUFFER *srsbuf)
 	ACPI_RESOURCE *end, *res;
 	ACPI_STATUS status;
 	struct link *link;
-	int i, in_dpf;
+	int i __diagused, in_dpf;
 
 	/* Fetch the _CRS. */
 	ACPI_SERIAL_ASSERT(pci_link);
@@ -861,7 +861,7 @@ acpi_pci_link_route_irqs(device_t dev)
 	ACPI_BUFFER srsbuf;
 	ACPI_STATUS status;
 	struct link *link;
-	int i;
+	int i __diagused;
 
 	ACPI_SERIAL_ASSERT(pci_link);
 	sc = device_get_softc(dev);