--- src/Engine/OptionInfo.cpp.orig	2019-08-03 22:24:06 UTC
+++ src/Engine/OptionInfo.cpp
@@ -16,6 +16,7 @@
  * You should have received a copy of the GNU General Public License
  * along with OpenXcom.  If not, see <http://www.gnu.org/licenses/>.
  */
+#include <algorithm>
 #include "OptionInfo.h"
 #include "Exception.h"
 
