diff --git a/src/main/c/GameTic_Tac_Toe/tictactoe.c b/src/main/c/GameTic_Tac_Toe/tictactoe.c
index c6b9659..6cab3ec 100644
--- a/src/main/c/GameTic_Tac_Toe/tictactoe.c
+++ b/src/main/c/GameTic_Tac_Toe/tictactoe.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include "tictactoe.h"
 
 char board[3][3] = {{'1', '2', '3'},
                     {'4', '5', '6'},