# HG changeset patch
# User belugas <belugas@openttd.org>
# Date 1201198564 0
# Node ID 349f1614d125c7c8996b1818066f669e42b8fbdf
# Parent  767804e6f878a8a7b841d5bd598dd997fde49a06
(svn r11976) -Fix: It seems that industries using results 0D/0E on callback cb29/35 were a bit too eager to close down.

diff --git a/src/industry_cmd.cpp b/src/industry_cmd.cpp
--- a/src/industry_cmd.cpp
+++ b/src/industry_cmd.cpp
@@ -2143,9 +2143,13 @@
 		}
 	}
 
+	/* Increase or Decreasing the production level if needed */
 	if (increment != 0) {
-		i->prod_level = ClampU(i->prod_level + increment, 4, 0x80);
-		if (i->prod_level == 4) closeit = true;
+		if !(increment < 0 && i->prod_level == 4) {
+			closeit = true;
+		} else {
+			i->prod_level = ClampU(i->prod_level + increment, 4, 0x80);
+		}
 	}
 
 	/* Close if needed and allowed */