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-rw-r--r--newgrf.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/newgrf.c b/newgrf.c
index 9e4b55ec9..3eb372827 100644
--- a/newgrf.c
+++ b/newgrf.c
@@ -2218,6 +2218,9 @@ static uint32 GetParamVal(byte param, uint32 *cond_val)
case 0x92: /* Game mode */
return _game_mode;
+ case 0x9A: /* Always -1 */
+ return -1;
+
case 0x9D: /* TTD Platform, 00=TTDPatch, 01=OpenTTD */
return 1;