diff --git a/tetris/rulesets/srs_x.lua b/tetris/rulesets/srs_x.lua
index bdaa4a5..66b484b 100644
--- a/tetris/rulesets/srs_x.lua
+++ b/tetris/rulesets/srs_x.lua
@@ -38,4 +38,6 @@ function SRS:onPieceRotate(piece, grid)
 	end
 end
 
+function SRS:get180RotationValue() return 2 end
+
 return SRS