diff --git a/util-linux/blkdiscard.c b/util-linux/blkdiscard.c
index 5863f0aab..e4902e5b5 100644
--- a/util-linux/blkdiscard.c
+++ b/util-linux/blkdiscard.c
@@ -8,6 +8,7 @@
 //config:config BLKDISCARD
 //config:	bool "blkdiscard (5.3 kb)"
 //config:	default y
+//config:	select PLATFORM_LINUX
 //config:	help
 //config:	blkdiscard discards sectors on a given device.