1 files changed, 1 insertions, 1 deletions

diff --git a/apps/plugins/chessbox/gnuchess.h b/apps/plugins/chessbox/gnuchess.h
index 6a4a6bdd4e..b80647a287 100644
--- a/apps/plugins/chessbox/gnuchess.h
+++ b/apps/plugins/chessbox/gnuchess.h
@@ -44,7 +44,7 @@ extern struct TimeControlRec TimeControl;
 extern struct GameRec GameList[240];
 
 /* ---- RockBox integration ---- */
-extern struct plugin_api* rb;
+extern const struct plugin_api* rb;
 
 /* ---- The beginning of a GNUChess v2 APIfication ---- */
 void SetTimeControl(void);