Stop using TRUE and FALSE for exit status.
diff --git a/util-linux/fdflush.c b/util-linux/fdflush.c
index 6633e12..380015d 100644
--- a/util-linux/fdflush.c
+++ b/util-linux/fdflush.c
@@ -40,7 +40,7 @@
 	fd = open(*argv, 0);
 	if (fd < 0) {
 		perror(*argv);
-		exit(FALSE);
+		return EXIT_FAILURE;
 	}
 
 	value = ioctl(fd, FDFLUSH, 0);
@@ -50,7 +50,7 @@
 
 	if (value) {
 		perror(*argv);
-		exit(FALSE);
+		return EXIT_FAILURE;
 	}
-	return(TRUE);
+	return EXIT_SUCCESS;
 }