diff --git a/dom/bluetooth/BluetoothTelephonyListener.cpp b/dom/bluetooth/BluetoothTelephonyListener.cpp
index 6f5924397ab0..eac3a431ba06 100644
--- a/dom/bluetooth/BluetoothTelephonyListener.cpp
+++ b/dom/bluetooth/BluetoothTelephonyListener.cpp
@@ -32,7 +32,8 @@ TelephonyListener::CallStateChanged(uint32_t aCallIndex,
                                     const nsAString& aNumber,
                                     bool aIsActive,
                                     bool aIsOutgoing,
-                                    bool aIsEmergency)
+                                    bool aIsEmergency,
+                                    bool aIsConference)
 {
   BluetoothHfpManager* hfp = BluetoothHfpManager::Get();
   hfp->HandleCallStateChanged(aCallIndex, aCallState, EmptyString(), aNumber,
@@ -41,6 +42,12 @@ TelephonyListener::CallStateChanged(uint32_t aCallIndex,
   return NS_OK;
 }
 
+NS_IMETHODIMP
+TelephonyListener::ConferenceCallStateChanged(uint16_t aCallState)
+{
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 TelephonyListener::EnumerateCallStateComplete()
 {
@@ -54,6 +61,7 @@ TelephonyListener::EnumerateCallState(uint32_t aCallIndex,
                                       bool aIsActive,
                                       bool aIsOutgoing,
                                       bool aIsEmergency,
+                                      bool aIsConference,
                                       bool* aResult)
 {
   BluetoothHfpManager* hfp = BluetoothHfpManager::Get();