diff --git a/tetris/modes/marathon_c89.lua b/tetris/modes/marathon_c89.lua
index fc2180a..65be71f 100644
--- a/tetris/modes/marathon_c89.lua
+++ b/tetris/modes/marathon_c89.lua
@@ -31,6 +31,8 @@ function MarathonC89Game:new()
 	self.enable_hold = false
 	self.next_queue_length = 1
 	self.additive_gravity = false
+	
+	self.irs = false
 end
 
 function MarathonC89Game:getDropSpeed() return 1/2 end
diff --git a/tetris/modes/race_40.lua b/tetris/modes/race_40.lua
index a192b6a..c794a21 100644
--- a/tetris/modes/race_40.lua
+++ b/tetris/modes/race_40.lua
@@ -36,6 +36,9 @@ function Race40Game:new()
 	self.instant_soft_drop = false
 	self.enable_hold = true
 	self.next_queue_length = 3
+	
+	self.irs = false
+	self.ihs = false
 end
 
 function Race40Game:getDropSpeed()