diff --git a/src/audio/audio_device.cpp b/src/audio/audio_device.cpp
index b9c5b6856..d8182606b 100644
--- a/src/audio/audio_device.cpp
+++ b/src/audio/audio_device.cpp
@@ -71,7 +71,10 @@ audioDevice::~audioDevice()
 	src_delete( m_srcState );
 #endif
 	bufferAllocator::free( m_buffer );
-	unlock();
+	if( m_devMutex.locked() )
+	{
+		unlock();
+	}
 }