diff --git a/drivers/staging/lustre/lustre/include/obd_support.h b/drivers/staging/lustre/lustre/include/obd_support.h
index 379266d6bcd9..c0136ee778e3 100644
--- a/drivers/staging/lustre/lustre/include/obd_support.h
+++ b/drivers/staging/lustre/lustre/include/obd_support.h
@@ -688,6 +688,7 @@ do {									      \
 
 #define OBD_FREE_LARGE(ptr, size)					     \
 do {									  \
+	(void)(size);							\
 	kvfree(ptr);							  \
 } while (0)