diff --git a/docs/Examples.md b/docs/Examples.md
index 515353d..d9f8e9a 100644
--- a/docs/Examples.md
+++ b/docs/Examples.md
@@ -239,7 +239,7 @@ For example, Type N receivers can be expected to correctly receive a stream orig
 
 ### Substreams
 
-The following example shows a MUX MPEG 2 transport stream receiver exposing substream constraints.
+The following example shows a mux MPEG 2 transport stream Receiver exposing substream constraints.
 
 ```json
 {
diff --git a/docs/Receiver Capabilities.md b/docs/Receiver Capabilities.md
index 170fb4c..f879e1c 100644
--- a/docs/Receiver Capabilities.md	
+++ b/docs/Receiver Capabilities.md	
@@ -166,7 +166,7 @@ If a Constraint Set is enabled or the Receiver does not support offline capabili
 
 ### Substreams
 
-The `urn:x-nmos:substreams` attribute allows MUX receivers to indicate per substream constraints.
+The `urn:x-nmos:substreams` attribute allows mux Receivers to indicate per substream constraints.
 
 The substreams are represented as a JSON array containing substream JSON objects.