diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index faeb8385cd51e661e7ad8d45978b1a38c033ce5a..b5f50868cc62becdc449c73bbbf1fdf0502ffb8e 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -1436,6 +1436,7 @@ qemudFindCharDevicePTYsMonitor(virConnectPtr conn,
     LOOKUP_PTYS(vm->def->serials,   vm->def->nserials,   "serial");
     LOOKUP_PTYS(vm->def->parallels, vm->def->nparallels, "parallel");
     LOOKUP_PTYS(vm->def->channels,  vm->def->nchannels,  "channel");
+#undef LOOKUP_PTYS
 
     return 0;
 }