diff --git a/tools/vhacd-util/src/VHACDUtil.cpp b/tools/vhacd-util/src/VHACDUtil.cpp
index c89b05555e..930d7046fa 100644
--- a/tools/vhacd-util/src/VHACDUtil.cpp
+++ b/tools/vhacd-util/src/VHACDUtil.cpp
@@ -12,6 +12,7 @@
 #include "VHACDUtil.h"
 
 #include <unordered_map>
+#include <algorithm>
 #include <QVector>
 
 #include <NumericalConstants.h>