1 files changed, 3 insertions, 0 deletions
diff --git a/signs.h b/signs.h
index dc8c65785..2cc417ca0 100644
--- a/signs.h
+++ b/signs.h
@@ -46,6 +46,9 @@ static inline uint16 GetSignPoolSize(void)
 
 VARDEF SignStruct *_new_sign_struct;
 
+VARDEF bool _sign_sort_dirty;
+VARDEF uint16 *_sign_sort;
+
 void UpdateAllSignVirtCoords(void);
 void PlaceProc_Sign(uint tile);