diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 66c23a0..cb7804c 100755
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -1021,4 +1021,7 @@
         <item>150</item>
         <item>100</item>
     </integer-array>
+
+    <!-- Flag indicating if the speed up audio on mt call code should be executed -->
+    <bool name="config_speed_up_audio_on_mt_calls">false</bool>
 </resources>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 1d29d8c..77b91af 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -277,6 +277,7 @@
   <java-symbol type="bool" name="config_safe_media_volume_enabled" />
   <java-symbol type="bool" name="config_camera_sound_forced" />
   <java-symbol type="bool" name="config_dontPreferApn" />
+  <java-symbol type="bool" name="config_speed_up_audio_on_mt_calls" />
 
   <java-symbol type="integer" name="config_cursorWindowSize" />
   <java-symbol type="integer" name="config_longPressOnPowerBehavior" />