diff --git a/stepmania/src/StyleDef.cpp b/stepmania/src/StyleDef.cpp
index 383fe623d5..bbaff7e83e 100644
--- a/stepmania/src/StyleDef.cpp
+++ b/stepmania/src/StyleDef.cpp
@@ -18,7 +18,7 @@
 #include "GameState.h"
 
 
-void StyleDef::GetTransformedNoteDataForStyle( PlayerNumber p, const NoteData* pOriginal, NoteData* pNoteDataOut )
+void StyleDef::GetTransformedNoteDataForStyle( PlayerNumber p, const NoteData* pOriginal, NoteData* pNoteDataOut ) const
 {
 	int iNewToOriginalTrack[MAX_COLS_PER_PLAYER];
 	for( int col=0; col<m_iColsPerPlayer; col++ )
diff --git a/stepmania/src/StyleDef.h b/stepmania/src/StyleDef.h
index 89eae2f2eb..9e9e3eb1ec 100644
--- a/stepmania/src/StyleDef.h
+++ b/stepmania/src/StyleDef.h
@@ -63,6 +63,6 @@ public:
 	GameInput StyleInputToGameInput( const StyleInput StyleI ) const;
 	StyleInput GameInputToStyleInput( const GameInput &GameI ) const;
 
-	void GetTransformedNoteDataForStyle( PlayerNumber p, const NoteData* pOriginal, NoteData* pNoteDataOut );
+	void GetTransformedNoteDataForStyle( PlayerNumber p, const NoteData* pOriginal, NoteData* pNoteDataOut ) const;
 };