diff --git a/include/Song.h b/include/Song.h
index 3f52cbbb1..2e5fa2401 100644
--- a/include/Song.h
+++ b/include/Song.h
@@ -186,6 +186,10 @@ public:
 	{
 		return m_playPos[pm];
 	}
+	inline const PlayPos & getPlayPos( PlayModes pm ) const
+	{
+		return m_playPos[pm];
+	}
 
 	void updateLength();
 	tact_t length() const
diff --git a/src/core/ProjectRenderer.cpp b/src/core/ProjectRenderer.cpp
index e8a91c77d..2aaf5665a 100644
--- a/src/core/ProjectRenderer.cpp
+++ b/src/core/ProjectRenderer.cpp
@@ -163,7 +163,7 @@ void ProjectRenderer::run()
     //skip first empty buffer
     Engine::mixer()->nextBuffer();
 
-	Song::PlayPos & pp = Engine::getSong()->getPlayPos(
+	const Song::PlayPos & pp = Engine::getSong()->getPlayPos(
 							Song::Mode_PlaySong );
 	m_progress = 0;
 	const int sl = ( Engine::getSong()->length() + 1 ) * 192;