diff --git a/crypto/lz4.c b/crypto/lz4.c
index 4586dd1..34d072b 100644
--- a/crypto/lz4.c
+++ b/crypto/lz4.c
@@ -68,7 +68,7 @@
 	size_t tmp_len = *dlen;
 	size_t __slen = slen;
 
-	err = lz4_decompress(src, &__slen, dst, tmp_len);
+	err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len);
 	if (err < 0)
 		return -EINVAL;
 
diff --git a/crypto/lz4hc.c b/crypto/lz4hc.c
index 151ba31..9218b3f 100644
--- a/crypto/lz4hc.c
+++ b/crypto/lz4hc.c
@@ -68,7 +68,7 @@
 	size_t tmp_len = *dlen;
 	size_t __slen = slen;
 
-	err = lz4_decompress(src, &__slen, dst, tmp_len);
+	err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len);
 	if (err < 0)
 		return -EINVAL;