diff --git a/models/Application_examples/Tic_Tac_Toe.mp b/models/Application_examples/Tic_Tac_Toe.mp
index a732686b05187ace4a9e065923eee29c7bb52747..ef136ef4fa0445221f8c91d96ed38e639e13a541 100644
--- a/models/Application_examples/Tic_Tac_Toe.mp
+++ b/models/Application_examples/Tic_Tac_Toe.mp
@@ -185,9 +185,9 @@ DO
 OD;
 COORDINATE $third_move:
  (
-     	X_chooses_center                         |
+      X_chooses_center                         |
       X_chooses_any_corner                       |
-     	X_chooses_corner_opposite_previous_X
+      X_chooses_corner_opposite_previous_X
  )
 DO
 	ADD SAY("THIRD MOVE OF THE GAME.") PRECEDES $third_move;