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-rw-r--r--src/industry.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/industry.h b/src/industry.h
index 265f2a333..d2fabf2dd 100644
--- a/src/industry.h
+++ b/src/industry.h
@@ -81,6 +81,7 @@ enum IndustyBehaviour {
INDUSTRYBEH_AIRPLANE_ATTACKS = 1 << 11, ///< can be exploded by a military airplane (oil refinery)
INDUSTRYBEH_CHOPPER_ATTACKS = 1 << 12, ///< can be exploded by a military helicopter (factory)
INDUSTRYBEH_CAN_SUBSIDENCE = 1 << 13, ///< can cause a subsidence (coal mine, shaft that collapses)
+ INDUSTRYBEH_CANCLOSE_LASTINSTANCE = 1 << 17, ///< Allow closing down the last instance of this type
};