diff --git a/sys/dev/sbni/if_sbni_pci.c b/sys/dev/sbni/if_sbni_pci.c
index abd24df842a..774510ef223 100644
--- a/sys/dev/sbni/if_sbni_pci.c
+++ b/sys/dev/sbni/if_sbni_pci.c
@@ -134,7 +134,7 @@ sbni_pci_attach(device_t dev)
 		goto attach_failed;
 	}
 
-	*(u_int32_t*)&flags = 0;
+	memset(&flags, 0, sizeof(flags));
 
 	error = sbni_attach(sc, device_get_unit(dev) * 2, flags);
 	if (error) {