diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 27ec6c537d95..08ae59a6e873 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -316,7 +316,7 @@ err1:
 #else
 static int persistent_memory_claim(struct dm_writecache *wc)
 {
-	BUG();
+	return -EOPNOTSUPP;
 }
 #endif