--- a/src/newgrf_gui.cpp	Fri Jun 22 11:58:59 2007 +0000
+++ b/src/newgrf_gui.cpp	Fri Jun 22 13:10:56 2007 +0000
@@ -156,6 +156,11 @@
 			break;
 		}
 
+		case WE_DOUBLE_CLICK:
+			if (e->we.click.widget != 3) break;
+			e->we.click.widget = 6;
+			/* Fall through */
+
 		case WE_CLICK:
 			switch (e->we.click.widget) {
 				case 3: {