diff --git a/src/openrct2/core/FileWatcher.cpp b/src/openrct2/core/FileWatcher.cpp
index afb9177c18..b3c24db6c6 100644
--- a/src/openrct2/core/FileWatcher.cpp
+++ b/src/openrct2/core/FileWatcher.cpp
@@ -7,6 +7,7 @@
  * OpenRCT2 is licensed under the GNU General Public License version 3.
  *****************************************************************************/
 
+#include <algorithm>
 #include <array>
 #include <cstdio>
 #include <stdexcept>