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-rw-r--r--src/newgrf.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 2bc557106..88ebbd3fc 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -3463,7 +3463,7 @@ static uint32 GetPatchVariable(uint8 param)
{
switch (param) {
/* start year - 1920 */
- case 0x0B: return _cur_year - ORIGINAL_BASE_YEAR;
+ case 0x0B: return max(_patches.starting_year, ORIGINAL_BASE_YEAR) - ORIGINAL_BASE_YEAR;
/* freight trains weight factor */
case 0x0E: return _patches.freight_trains;
/* empty wagon speed increase */