diff --git a/binding-mri/graphics-binding.cpp b/binding-mri/graphics-binding.cpp
index dd4519a..d8a874e 100644
--- a/binding-mri/graphics-binding.cpp
+++ b/binding-mri/graphics-binding.cpp
@@ -198,7 +198,6 @@ RB_METHOD(graphicsPlayMovie)
 DEF_GRA_PROP_I(FrameRate)
 DEF_GRA_PROP_I(FrameCount)
 DEF_GRA_PROP_I(Brightness)
-DEF_GRA_PROP_B(Smooth)
 
 DEF_GRA_PROP_B(Fullscreen)
 DEF_GRA_PROP_B(ShowCursor)
@@ -242,8 +241,6 @@ void graphicsBindingInit()
 	_rb_define_module_function(module, "play_movie", graphicsPlayMovie);
 	}
 
-	INIT_GRA_PROP_BIND( Smooth,     "smooth"      );
-
 	INIT_GRA_PROP_BIND( Fullscreen, "fullscreen"  );
 	INIT_GRA_PROP_BIND( ShowCursor, "show_cursor" );
 	INIT_GRA_PROP_BIND( Smooth,     "smooth"      );
diff --git a/src/graphics.cpp b/src/graphics.cpp
index b92a7e2..03c9f19 100644
--- a/src/graphics.cpp
+++ b/src/graphics.cpp
@@ -936,13 +936,6 @@ void Graphics::fadein(int duration)
 	}
 }
 
-DEF_ATTR_RD_SIMPLE(Graphics, Smooth, bool, p->smooth)
-
-void Graphics::setSmooth(bool value)
-{
-	p->smooth = value;
-}
-
 Bitmap *Graphics::snapToBitmap()
 {
 	Bitmap *bitmap = new Bitmap(width(), height());