Made BBox() const
diff --git a/include/FTGlyph.h b/include/FTGlyph.h
index cccaa20..ab2ec43 100755
--- a/include/FTGlyph.h
+++ b/include/FTGlyph.h
@@ -55,7 +55,7 @@ class FTGL_EXPORT FTGlyph
*
* @return bounding box.
*/
- FTBBox BBox() const { return bBox;}
+ const FTBBox& BBox() const { return bBox;}
/**
* Queries for errors.