diff --git a/sys/amd64/vmm/amd/amdiommu.c b/sys/amd64/vmm/amd/amdiommu.c
index 26c4b10d7807..8dceb1aa241b 100644
--- a/sys/amd64/vmm/amd/amdiommu.c
+++ b/sys/amd64/vmm/amd/amdiommu.c
@@ -165,7 +165,7 @@ ivhd_teardown_intr(device_t dev)
 
 	sc = device_get_softc(dev);
 
-	if (sc->event_res != NULL) {
+	if (sc->event_tag != NULL) {
 		bus_teardown_intr(dev, sc->event_res, sc->event_tag);
 		sc->event_tag = NULL;
 	}