diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3263ba98a..c7ff8cc8d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - RFCOMM: Trigger l2cap request to send on rfcomm credits when client is waiting to sendtrigger l2cap request to send on rfcomm credits when client is waiting to send
 - L2CAP: Evaluate 'can send now' on HCI Disconnect as ACL buffers in Bluetooth Controller have been used for the closed connection are freed implicitly
 - GATT Client: stop timer on disconnect - fixes use after free / crash
+- L2CAP: Use valid signaling identifier for L2CAP Connection Parameter Update Request
 
 ## Changes August 2018
 
diff --git a/src/l2cap.c b/src/l2cap.c
index f7e03cd66..f8c962713 100644
--- a/src/l2cap.c
+++ b/src/l2cap.c
@@ -1705,7 +1705,7 @@ static void l2cap_run(void){
         switch (connection->le_con_parameter_update_state){
             case CON_PARAMETER_UPDATE_SEND_REQUEST:
                 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE;
-                l2cap_send_le_signaling_packet(connection->con_handle, CONNECTION_PARAMETER_UPDATE_REQUEST, connection->le_con_param_update_identifier,
+                l2cap_send_le_signaling_packet(connection->con_handle, CONNECTION_PARAMETER_UPDATE_REQUEST, l2cap_next_sig_id(),
                                                connection->le_conn_interval_min, connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout);
                 break;
             case CON_PARAMETER_UPDATE_SEND_RESPONSE: