diff --git a/voice_engine/shared_data.h b/voice_engine/shared_data.h
index a841547..7c7ad5c 100644
--- a/voice_engine/shared_data.h
+++ b/voice_engine/shared_data.h
@@ -22,6 +22,7 @@
 class ProcessThread;
 
 namespace webrtc {
+class Config;
 class CriticalSectionWrapper;
 
 namespace voe {
@@ -79,7 +80,7 @@
 
     AudioDeviceModule::AudioLayer _audioDeviceLayer;
 
-    SharedData();
+    SharedData(const Config& config);
     virtual ~SharedData();
 };