diff --git a/src/model.c b/src/model.c
index cc3e64c..cd642ee 100644
--- a/src/model.c
+++ b/src/model.c
@@ -174,7 +174,7 @@ void set_tictactoe_winner(s_tictactoe *p_ttt){
     // columns
     for ( int i=0; i < TICTACTOE_WIDTH; i++ ) {
         if (p_ttt->content[i] != NOBODY
-                &&p_ttt->content[i] == p_ttt->content[i+1]
+                &&p_ttt->content[i] == p_ttt->content[i+3]
                 && p_ttt->content[i] == p_ttt->content[i+6]) {
             p_ttt->winner = p_ttt->content[i];
             return;