diff --git a/src/main.c b/src/main.c
index ef60ec2..3fd96d9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -61,7 +61,7 @@ static struct {
 static int lockfile(void) {
   assert(!lfh.open);
   snprintf(lfh.fp, MAXFP, "%s/.fsautoproc.lock", initargs.searchdir);
-  if ((lfh.fd = open(lfh.fp, O_RDWR | O_CREAT | O_EXCL | O_EXLOCK)) < 0) {
+  if ((lfh.fd = open(lfh.fp, O_RDWR | O_CREAT | O_EXCL | EXFILELOCKFLAG)) < 0) {
     log_error("error locking `%s`: %s", lfh.fp, strerror(errno));
     return -1;
   }