diff --git a/module/zfs/lz4.c b/module/zfs/lz4.c
index a9aa02819..497296e35 100644
--- a/module/zfs/lz4.c
+++ b/module/zfs/lz4.c
@@ -115,6 +115,8 @@ lz4_decompress_zfs(void *s_start, void *d_start, size_t s_len,
  * 		writes beyond dest + osize, and is therefore protected
  * 		against malicious data packets.
  * 	note : destination buffer must be already allocated
+ *	note : real_LZ4_uncompress() is not used in ZFS so its code
+ *	       is not present here.
  *
  * Advanced Functions
  *
@@ -866,6 +868,9 @@ real_LZ4_compress(const char *source, char *dest, int isize, int osize)
  *	it will never read outside of the input buffer. A corrupted input
  *	will produce an error result, a negative int, indicating the position
  *	of the error within input stream.
+ *
+ * Note[2]: real_LZ4_uncompress(), referred to above, is not used in ZFS so
+ *	its code is not present here.
  */
 
 static int