diff --git a/stepmania/src/WorkoutGraph.cpp b/stepmania/src/WorkoutGraph.cpp
index 518d7cadef..f0e0dc7f19 100644
--- a/stepmania/src/WorkoutGraph.cpp
+++ b/stepmania/src/WorkoutGraph.cpp
@@ -48,6 +48,8 @@ void WorkoutGraph::SetFromGameState()
 
 void WorkoutGraph::SetFromGameStateInternal( int iNumSongsToShowForCurrentStage )
 {
+	ASSERT( WORKOUTMAN->m_pCurWorkout );
+
 	FOREACH( Sprite*, m_vpBars, p )
 	{
 		this->RemoveChild( *p );