diff --git a/src/audio/QGCAudioWorker.cpp b/src/audio/QGCAudioWorker.cpp
index f03ae6f08877112926e9267f2a9a544237f417e6..ac5b036ddd23d2a30e3b319d3c6144d54e527e42 100644
--- a/src/audio/QGCAudioWorker.cpp
+++ b/src/audio/QGCAudioWorker.cpp
@@ -20,7 +20,7 @@
 #endif
 
 #if defined _MSC_VER && defined QGC_SPEECH_ENABLED
-ISpVoice *GAudioOutput::pVoice = NULL;
+ISpVoice *QGCAudioWorker::pVoice = NULL;
 #endif
 
 #define QGC_GAUDIOOUTPUT_KEY QString("QGC_AUDIOOUTPUT_")