diff --git a/udev.c b/udev.c
index bc4722b0..aa2a1a24 100644
--- a/udev.c
+++ b/udev.c
@@ -167,7 +167,7 @@ enum udev_status udev_block(char *devnm)
 	int fd;
 	char *path = xcalloc(1, BUFSIZ);
 
-	snprintf(path, BUFSIZ, "/run/mdadm/creating-%s", devnm);
+	snprintf(path, BUFSIZ, "%s/creating-%s", MAP_DIR, devnm);
 
 	fd = open(path, O_CREAT | O_RDWR, 0600);
 	if (!is_fd_valid(fd)) {