diff --git a/DOCS/tech/nut.txt b/DOCS/tech/nut.txt
index 8f3bf6a49e..631c920556 100644
--- a/DOCS/tech/nut.txt
+++ b/DOCS/tech/nut.txt
@@ -72,7 +72,8 @@ pts
     presentation time of the first frame/sample that is completed by decoding
     the coded frame.
 dts
-    of a frame is the time when it is input into the decoder
+    of a frame is the time when it is input into a synchronous 1-in-1-out
+    decoder
 
 
 Syntax: