diff --git a/usr.sbin/bhyve/pci_passthru.c b/usr.sbin/bhyve/pci_passthru.c
--- a/usr.sbin/bhyve/pci_passthru.c
+++ b/usr.sbin/bhyve/pci_passthru.c
@@ -593,8 +593,8 @@
 		goto done;
 	}
 
-	pci_set_cfgdata16(pi, PCIR_COMMAND, read_config(&sc->psc_sel,
-	    PCIR_COMMAND, 2));
+	write_config(&sc->psc_sel, PCIR_COMMAND, 2,
+	    pci_get_cfgdata16(pi, PCIR_COMMAND));
 
 	error = 0;				/* success */
 done: