diff --git a/services/audioflinger/AudioHwDevice.h b/services/audioflinger/AudioHwDevice.h
index 1749f3f..d071922 100644
--- a/services/audioflinger/AudioHwDevice.h
+++ b/services/audioflinger/AudioHwDevice.h
@@ -46,7 +46,7 @@
 
     AudioHwDevice(audio_module_handle_t handle,
                   const char *moduleName,
-                  sp<DeviceHalInterface> hwDevice,
+                  const sp<DeviceHalInterface>& hwDevice,
                   Flags flags)
         : mHandle(handle)
         , mModuleName(strdup(moduleName))