diff --git a/docs/design/mscclpp-dsl.md b/docs/design/mscclpp-dsl.md
index 3e6081c4..9b34b29f 100644
--- a/docs/design/mscclpp-dsl.md
+++ b/docs/design/mscclpp-dsl.md
@@ -104,7 +104,7 @@ MSCCLPPLang provides the instruction fusion mechanism to fuse multiple operation
 - `reduce(self, other_chunkref, recvtb, channel_type)`: Reduces the chunk(s) referenced by other_chunkref into the chunk(s) referenced by this chunkref
 
 ### Packet APIs
-Packet APIs are used when user wants to use LL algorithm. The packet APIs are similar to the basic APIs, it will packet the data and flags into a packet and send the packet to the destination GPU. The destination GPU will unpack the packet and get the data and flags. So no synchronization is needed when using packet APIs. (`ChannelType.nvls` is not supported for packet APIs)
+Packet APIs are used when user wants to use LL algorithm. The packet APIs are similar to the basic APIs, it will packet the data and flags into a packet and send the packet to the destination GPU. The destination GPU will unpack the packet and get the data and flags. So no synchronization is needed when using packet APIs. (`ChannelType.nvls` does not support packet APIs)
 - `packet_put(self, dst, buffer, index, sendtb, chan_type)`: send the data from one GPU to another GPU using packet.
 - `copy_packet(self, dst, buffer, index, sendtb)`: copy the data from one buffer to another buffer in the same GPU using packet.
 - `reduce_packet(self, other_chunkref, recvtb)`: Reduces the chunk(s) referenced by other_chunkref into the chunk(s) referenced by this chunkref using packet.