1 files changed, 1 insertions, 1 deletions
diff --git a/range.c b/range.c
index 425259f..43231d9 100644
--- a/range.c
+++ b/range.c
@@ -1248,7 +1248,7 @@ struct game_drawstate {
 #define COORD(x) ((x) * TILESIZE + BORDER)
 #define FROMCOORD(x) (((x) - BORDER) / TILESIZE)
 
-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)
 {
     enum {none, forwards, backwards, hint};