diff --git a/src/wifi/doc/source/wifi-design.rst b/src/wifi/doc/source/wifi-design.rst
index 975a951ce..d56abcfa4 100644
--- a/src/wifi/doc/source/wifi-design.rst
+++ b/src/wifi/doc/source/wifi-design.rst
@@ -191,6 +191,9 @@ Some implementation choices that are not imposed by the standard are listed belo
 * The wifi manager always selects the lowest basic rate for management frames.
 * If a STA (AP or non-AP) supports VHT, a Block Ack agreement is always setup once
   a first packet is enqueued regardless of whether it will be transmitted in an A-MPDU.
+* Once an A-MSDU is created, it is no longer modified, even before it is actually transmitted
+  for the first time. This means that this A-MSDU cannot be aggregated to other MSDUs using A-MSDU
+  aggregation.
 
 Design Details
 **************