diff --git a/resource-overlay/common/Frameworks/res/values/config.xml b/resource-overlay/common/Frameworks/res/values/config.xml
index 13bae07..f06eb5d 100644
--- a/resource-overlay/common/Frameworks/res/values/config.xml
+++ b/resource-overlay/common/Frameworks/res/values/config.xml
@@ -147,9 +147,6 @@
          Software implementation will be used if config_hardware_auto_brightness_available is not set -->
     <bool name="config_automatic_brightness_available">true</bool>
 
-    <!-- Flag indicating if the speed up audio on mt call code should be executed -->
-    <bool name="config_speed_up_audio_on_mt_calls">true</bool>
-
     <!-- Whether camera shutter sound is forced or not  (country specific). -->
     <bool name="config_camera_sound_forced">false</bool>