diff --git a/sys/powerpc/psim/iobus.c b/sys/powerpc/psim/iobus.c
index 3428125835b..e57f14e8f29 100644
--- a/sys/powerpc/psim/iobus.c
+++ b/sys/powerpc/psim/iobus.c
@@ -315,8 +315,6 @@ iobus_alloc_resource(device_t bus, device_t child, int type, int *rid,
 	case SYS_RES_IOPORT:
 		rm = &sc->sc_mem_rman;
 		tagval = PPC_BUS_SPACE_MEM;
-		if (flags & PPC_BUS_SPARSE4)
-			tagval |= 4;
 		break;
 	case SYS_RES_IRQ:
 		return (bus_alloc_resource(bus, type, rid, start, end, count,