diff --git a/bindings/matrix-sdk-ffi/src/room_member.rs b/bindings/matrix-sdk-ffi/src/room_member.rs
index 03dc0b9165..36e40743f6 100644
--- a/bindings/matrix-sdk-ffi/src/room_member.rs
+++ b/bindings/matrix-sdk-ffi/src/room_member.rs
@@ -19,6 +19,9 @@ pub enum MembershipState {
 
     /// The user has left.
     Leave,
+
+    /// A custom membership state value.
+    Custom { value: String },
 }
 
 impl TryFrom<matrix_sdk::ruma::events::room::member::MembershipState> for MembershipState {
@@ -43,6 +46,9 @@ impl TryFrom<matrix_sdk::ruma::events::room::member::MembershipState> for Member
             matrix_sdk::ruma::events::room::member::MembershipState::Leave => {
                 Ok(MembershipState::Leave)
             }
+            matrix_sdk::ruma::events::room::member::MembershipState::_Custom(_) => {
+                Ok(MembershipState::Custom { value: m.to_string() })
+            }
             _ => {
                 tracing::warn!("Other membership state change not yet implemented");
                 Err(NotYetImplemented)