diff --git a/host/Cargo.toml b/host/Cargo.toml
index 3dde956..70c0085 100644
--- a/host/Cargo.toml
+++ b/host/Cargo.toml
@@ -23,6 +23,7 @@ embassy-time = "0.3"
 embassy-futures = "0.1"
 futures = { version = "0.3", default-features = false }
 heapless = "0.8"
+byteorder = { version = "1", default-features = false  }
 
 # Logging
 log = { version = "0.4.16", optional = true }
diff --git a/host/src/advertise.rs b/host/src/advertise.rs
index 4b083e1..9e316b1 100644
--- a/host/src/advertise.rs
+++ b/host/src/advertise.rs
@@ -1,6 +1,7 @@
 //! Advertisement config.
 use bt_hci::param::AdvEventProps;
 pub use bt_hci::param::{AdvChannelMap, AdvFilterPolicy, AdvHandle, AdvSet, PhyKind};
+use byteorder::{ByteOrder, LittleEndian};
 use embassy_time::Duration;
 
 use crate::cursor::{ReadCursor, WriteCursor};
@@ -484,7 +485,10 @@ impl<'d> AdStructureIter<'d> {
             0x08 => Ok(AdStructure::ShortenedLocalName(data)),
             0x09 => Ok(AdStructure::CompleteLocalName(data)),
             // 0x16 => unimplemented!(),
-            // 0xff => unimplemented!(),
+            0xff => Ok(AdStructure::ManufacturerSpecificData {
+                company_identifier: LittleEndian::read_u16(&data[..2]),
+                payload: &data[2..],
+            }),
             ty => Ok(AdStructure::Unknown { ty, data }),
         }
     }