1 files changed, 1 insertions, 1 deletions
diff --git a/samegame.c b/samegame.c
index 49dd64e..65ebef7 100644
--- a/samegame.c
+++ b/samegame.c
@@ -1267,7 +1267,7 @@ struct game_drawstate {
     int *tiles; /* contains colour and SELECTED. */
 };
 
-static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
+static char *interpret_move(game_state *state, game_ui *ui, const game_drawstate *ds,
 			    int x, int y, int button)
 {
     int tx, ty;