diff --git a/dom/bluetooth/bluez/BluetoothHfpManager.cpp b/dom/bluetooth/bluez/BluetoothHfpManager.cpp
index 41475e29250..814b562c4b3 100644
--- a/dom/bluetooth/bluez/BluetoothHfpManager.cpp
+++ b/dom/bluetooth/bluez/BluetoothHfpManager.cpp
@@ -384,6 +384,7 @@ BluetoothHfpManager::Reset()
   mCMER = false;
   mConnectScoRequest = false;
   mSlcConnected = false;
+  mHspConnected = false;
   mReceiveVgsFlag = false;
 
 #ifdef MOZ_B2G_RIL
@@ -1617,6 +1618,7 @@ BluetoothHfpManager::OnSocketConnectSuccess(BluetoothSocket* aSocket)
     mHeadsetSocket = nullptr;
   } else if (aSocket == mHeadsetSocket) {
     MOZ_ASSERT(!mSocket);
+    mHspConnected = true;
     mHeadsetSocket.swap(mSocket);
 
     mHandsfreeSocket->Disconnect();
@@ -1802,9 +1804,9 @@ BluetoothHfpManager::ConnectSco(BluetoothReplyRunnable* aRunnable)
     return false;
   }
 
-  // Make sure Service Level Connection established before we start to
-  // set up SCO (synchronous connection).
-  if (!mSlcConnected) {
+  // If we are not using HSP, we have to make sure Service Level Connection
+  // established before we start to set up SCO (synchronous connection).
+  if (!mSlcConnected && !mHspConnected) {
     mConnectScoRequest = true;
     BT_WARNING("ConnectSco called before Service Level Connection established");
     return false;
diff --git a/dom/bluetooth/bluez/BluetoothHfpManager.h b/dom/bluetooth/bluez/BluetoothHfpManager.h
index 2e01783861a..91f78c6cd99 100644
--- a/dom/bluetooth/bluez/BluetoothHfpManager.h
+++ b/dom/bluetooth/bluez/BluetoothHfpManager.h
@@ -102,8 +102,9 @@ public:
    * This function set up a Synchronous Connection (SCO) link for HFP.
    * Service Level Connection (SLC) should be established before SCO setup
    * process.
-   * If SLC haven't been established, this function will return false and send a
-   * request to set up SCO ater HfpManager receive AT+CMER.
+   * If SLC haven't been established, this function will return false and
+   * send a request to set up SCO ater HfpManager receive AT+CMER, unless we are
+   * connecting HSP socket rather than HFP socket.
    *
    * @param  aRunnable Indicate a BluetoothReplyRunnable to execute this
    *                   function. The default value is nullpter
@@ -188,6 +189,7 @@ private:
   bool mCMER;
   bool mConnectScoRequest;
   bool mSlcConnected;
+  bool mHspConnected;
 #ifdef MOZ_B2G_RIL
   bool mFirstCKPD;
   int mNetworkSelectionMode;