diff -r 6c3e824e83e4 -r c2434269c3eb src/main_gui.cpp
--- a/src/main_gui.cpp	Sun Dec 23 04:31:45 2007 +0000
+++ b/src/main_gui.cpp	Sun Dec 23 10:56:02 2007 +0000
@@ -50,6 +50,7 @@
 #include "industry.h"
 #include "transparency.h"
 #include "strings_func.h"
+#include "zoom_func.h"
 
 static int _rename_id = 1;
 static int _rename_what = -1;