diff --git a/plugins/AudioFileProcessor/AudioFileProcessor.cpp b/plugins/AudioFileProcessor/AudioFileProcessor.cpp
index 8126d4c08..2e2d7163b 100644
--- a/plugins/AudioFileProcessor/AudioFileProcessor.cpp
+++ b/plugins/AudioFileProcessor/AudioFileProcessor.cpp
@@ -550,7 +550,7 @@ AudioFileProcessorView::AudioFileProcessorView( Instrument * _instrument,
 	connect( castModel<AudioFileProcessor>(), SIGNAL( isPlaying( lmms::f_cnt_t ) ),
 			m_waveView, SLOT( isPlaying( lmms::f_cnt_t ) ) );
 
-	qRegisterMetaType<f_cnt_t>( "f_cnt_t" );
+	qRegisterMetaType<lmms::f_cnt_t>( "lmms::f_cnt_t" );
 
 	setAcceptDrops( true );
 }
@@ -1287,4 +1287,4 @@ PLUGIN_EXPORT Plugin * lmms_plugin_main(Model * model, void *)
 }
 
 
-} // namespace lmms
\ No newline at end of file
+} // namespace lmms